THE EIGHTH CONGRESS OF ROMANIAN MATHEMATICIANS

Transcription

1 THE EIGHTH CONGRESS OF ROMANIAN MATHEMATICIANS PROGRAMME and ABSTRACT BOOK ALEXANDRU IOAN CUZA UNIVERSITY OF IASI IAȘI, 2015

2 ORGANIZING INSTITUTIONS The Section of Mathematical Sciences of the Romanian Academy The Simion Stoilow Institute of Mathematics of the Romanian Academy The Faculty of Mathematics of "Alexandru Ioan Cuza" University of Iasi The Faculty of Mathematics and Computer Science of the University of Bucharest "Octav Mayer" Institute of Mathematics of the Romanian Academy, Iasi The Romanian Mathematical Society "Alexandru Myller" Mathematical Seminary Foundation ORGANIZING COMMITTEE Romanian Academy Viorel Barbu, Marius Iosifescu, Solomon Marcus, Ioan Tomescu, Gabriela Marinoschi - Simion Stoilow Institute of Mathematics of the Romanian Academy Lucian Beznea, Dan Timotin University of Bucharest Victor Tigoiu Faculty of Mathematics of "Alexandru Ioan Cuza" University of Iasi "Octav Mayer" Institute of Mathematics of the Roumanian Academy, Iasi Cătălin-George Lefter The Romanian Mathematical Society Radu Gologan

3 THE CONGRESS IS ORGANIZED WITH FINANCIAL SUPPORT FROM: Dedeman Fundaţia Familiei Menachem H. Elias - the Romanian Academy Fundaţia Patrimoniu - the Romanian Academy Fundaţia Seminarului Matematic Alexandru Myller SOFTWIN Group The organizing institutions contributed with both financial and logistic support to the Congress.

4 SECTIONS 1. ALGEBRA AND NUMBER THEORY Special session: Local rings and homological algebra. Special session dedicated to Prof. Nicolae Radu 2. ALGEBRAIC, COMPLEX AND DIFFERENTIAL GEOMETRY AND TOPOLOGY Special session: Geometry and Topology of Differentiable Manifolds and Algebraic Varieties 3. REAL AND COMPLEX ANALYSIS, POTENTIAL THEORY 4. ORDINARY AND PARTIAL DIFFERENTIAL EQUATIONS, VARIATIONAL METHODS, OPTIMAL CONTROL Special session: Optimization and Games Theory 5. FUNCTIONAL ANALYSIS, OPERATOR THEORY AND OPERATOR ALGEBRAS, MATHEMATICAL PHYSICS Special sessions: Spectral Theory and Applications in Mathematical Physics Dynamical Systems and Ergodic Theory 6. PROBABILITY, STOCHASTIC ANALYSIS, AND MATHEMATICAL STATISTICS 7. MECHANICS, NUMERICAL ANALYSIS, MATHEMATICAL MODELS IN SCIENCES Special sessions: Mathematical Modeling of Some Medical and Biological Processes Mathematical Models in Astronomy 8. THEORETICAL COMPUTER SCIENCE, OPERATIONS RESEARCH AND MATHEMATICAL PROGRAMMING Special session: Logic in Computer Science 9. HISTORY AND PHILOSOPHY OF MATHEMATICS

5 CONTENTS Short programme Full programme Abstract 34 Index 159

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11 FULL PROGRAMME OF THE CONGRESS FRIDAY, June 26, :00 - CONGRESS OPENING Aula Magna Mihai Eminescu SECTION 1: Algebra and Number Theory room III.11 Chairman: Șerban Raianu 11:30 12:30 CAENEPEEL Stefaan Hopf Categories 12:30 13:00 POP Horia Heisenberg algebras and coefficient rings 13:00 15:00 LUNCH Chairman: Ghiocel Groza 15:00 15:30 DEACONESCU Marian Operator Theory for Finite Groups 15:30 16:00 POPESCU Sever - Angel On the v-extensions of a valued field (coautor Victor Alexandru) 16:00 16:30 COFFEE BREAK Chairman: Marian Deaconescu 16:30 17:00 BREAZ Simion Pure semisimple rings and direct products 17:00 17:30 PANAITE Florin Hom-structures 17:30 18:00 STAIC Mihai Operations on the Secondary Hochschild Cohomology Chairman: Viviana Ene 18:00 18:30 RAICU Claudiu The syzygies of some thickenings of determinantal varieties 18:30 19:00 ICHIM Bogdan How to compute the Stanley depth of a module 19:00 19:30 URSU Vasile Commutators theory in language congruences for modular algebraic system SECTION 2 - Algebraic, Complex and Differential Geometry and Topology room Myller Chairman: Vasile Brînzănescu 11:30 12:30 MOSCOVICI Henri Modular geometry on noncommutative tori 12:30 13:00 ANASTASIEI Mihai Some foliations on the cotangent bundle 13:00 15:00 LUNCH Chairman: Marian Aprodu 15:00 16:00 BURGHELEA Dan Refinements of homology provided by a real or angle valued map 16:00 16:30 COFFEE BREAK 16:30 17:30 RASDEACONU Rares Counting real rational curves on K3 surfaces 17:30 18:00 DAMIAN Florin Hyperbolic manifolds and their representations by lens polytopes 18:00 18:30 BEJAN Cornelia - Livia Parallel second order tensors on Vaisman manifolds SECTION 3 - Real and Complex Analysis, Potential Theory room II.7 Chairman: Grigore Ștefan Salagean 11:30 12:00 BAYINDIR Hilal Approximation by generalized deferred Cesàro means in the space H p 12:00 12:30 BERISHA Faton On some I p -type inequalities involving quasi monotone and quasi lacunary sequences

12 12:30 13:00 KOHR Gabriela The generalized Loewner differential equation in higher dimensions. Applications to extremal problems for biholomorphic mappings 13:00 15:00 LUNCH Chairman: Victor Lie 15:00 16:00 BRACCI Filippo Univalent mappings, Horosphere boundary and prime end theory in higher dimension 16:00 16:30 COFFEE BREAK Chairman: Gabriela Kohr 16:30 17:00 IANCU Mihai Compactness and density of certain reachable families of the Loewner ODE in C n 17:00 17:30 IONITA George - Ionut q-completeness and q-completeness with corners of unbranched Riemann domains 17:30 18:00 SALAGEAN Grigore Some characteristic properties of analytic functions Stefan 18:00 18:30 BUCUR Gheorghe Generalized Arzela-Ascoli theorem and applications 18:30 19:00 BUCUR Ileana Fixed point theory and contractive sequences SECTION 4 - Ordinary and Partial Differential Equations, Variational Methods, Optimal Control room I.1 Chairman: Petru Jebelean 11:30 12:30 MAWHIN Jean Periodic solutions of relativistic-type systems with periodic nonlinearities 12:30 13:00 IGNAT Radu Kinetic formulation for vortex vector fields 13:00 15:00 LUNCH Room II.4 Chairman: Radu Ignat 15:00 15:30 GAUDIELLO Antonio Homogenization of highly oscillating boundaries with strongly contrasting diffusivity 15:30 16:00 BEREANU Cristian Prescribed mean curvature of manifolds in Minkowski space 16:00 16:30 COFFEE BREAK Chairman: Antonio Gaudiello 16:30 17:00 KRISTALY Alexandru Gagliardo-Nirenberg inequalities on manifolds: the influence of the curvature 17:00 17:30 VARGA Csaba Symmetry and multiple solutions for certain quasilinear elliptic equations Chairman: Cristian Bereanu 17:30 18:00 MIHAILESCU Mihai On the asymptotic behavior of some classes of nonlinear eigenvalue problems involving the $p$-laplacian Existence results for discontinuous perturbations of singular - Laplacian operator 18:00 18:20 SERBAN Calin- Constantin 18:20 18:40 FARCASEANU Maria On the spectrum of some eigenvalue problems 18:40 19:00 MARICA Aurora Numerical meshes ensuring uniform observability of 1d waves

13 SECTION 5 - Functional Analysis, Operator Theory and Operator Algebras, Mathematical Physics room II.5 Joint Section 2 room Myller 11:30 12:30 MOSCOVICI Henri Modular geometry on noncommutative tori Chairman: Marius Dadarlat 12:30 13:30 VASILESCU Florian - Square Positive Functionals in an Abstract Setting Horia 13:30 15:00 LUNCH Special session: Spectral Theory and Applications in Mathematical Physics Chairman: Stefan Teufel 15:00 16:00 PILLET Claude - Alain Conductance and AC Spectrum 16:00 16:30 COFFEE BREAK Chairman: Pavel Exner 16:30 17:30 TEUFEL Stefan Peierls substitution for subbands of the Hofstadter model 17:30 18:30 CORNEAN Horia On the construction of composite Wannier functions Chairman: Gheorghe Nenciu 18:30 19:00 RASMUSSEN Morten Analytic Perturbation Theory of Embedded Eigenvalues Grud 19:00 19:30 SAVOIE Baptiste A rigorous proof of the Bohr-van Leeuwen theorem in the semiclassical limit SECTION 6 - Probability, Stochastic Analysis, and Mathematical Statistics room III.9 Chairman: Mădălina Deaconu 11:30 12:30 PIRVU Traian Cumulative Prospect Theory with Skewed Return Distribution 13:00 15:00 LUNCH Chairman: Lucian Beznea 15:00 16:00 DEACONU Madalina Brownian and Bessel hitting times: new trends in their approximation 16:00 16:30 COFFEE BREAK 16:30 17:30 BALLY Vlad Asymptotic behavior for PDMP's with three regime 17:30 18:00 MATICIUC Lucian Viscosity solutions for functional parabolic PDEs. A stochastic approach via BSDEs with time-delayed 18:00 18:30 ROTENSTEIN Eduard Anticipated BSVIs with generalized reflection Parallel session Faculty Conference room Chairman: Anna Soos 11:30 12:30 MARRON, J. S. Object Oriented Data Analysis 12:30 13:30 PATRANGENARU Vic Two Sample Tests for Means on Lie Groups and Homogeneous Spaces with Examples 13:00 15:00 LUNCH

14 SECTION 7 - Mechanics, Numerical Analysis, Mathematical Models in Sciences room I.3 Joint Section 2 room I.1 11:30 12:30 MAWHIN Jean Periodic solutions of relativistic-type systems with periodic nonlinearities 13:00 15:00 LUNCH Chairman: Gabriela Marinoschi 15:00 15:30 MIRANVILLE Alain Some generalizations of the Cahn-Hilliard equation 15:30 16:00 CAVATERRA Cecilia Non-isothermal viscous Cahn-Hilliard equation with inertial term and dynamic boundary conditions 16:00 16:30 COFFEE BREAK Chairman: Victor Ţigoiu 16:30 17:00 KOHR Mirela Boundary value problems of transmission type for the Navier- Stokes and Darcy-Forchheimer-Brinkman systems in weighted Sobolev spaces 17:00 17:30 POLISEVSCHI Dan The flow through fractured porous media along Beavers-Joseph interfaces 17:30 18:00 PASA Gelu Saffman-Taylor instability for a non-newtonian Fluid 18:00 18:30 ION Stelian Water flow on vegetated hill. Shallow water equations model Special session: Mathematical Modeling of Some Medical and Biological Processes room II.6 Chairman: Narcisa Apreutesei 15:00 15:30 PRECUP Radu Mathematical models of stem cell transplantation 15:30 16:00 NEAMTU Mihaela Hopf bifurcation analysis for the model of the hypothalamicpituitary-adrenal axis with distributed time dela 16:00 16:30 COFFEE BREAK 16:30 17:00 BALAN Vladimir Spectral aspects of anisotropic metric models in the Garner oncologic framework 17:00 17:30 RADULESCU Anca Dynamic Networks: From Connectivity to Temporal Behavior 17:30 18:00 ION Anca Veronica Qualitative and numerical study of a system of delay differential equations modeling leukemia 18:00 18:30 LITCANU Gabriela About patterns driven by chemotaxis 18:30 19:00 DIMITRIU Gabriel Numerical simulations of a two noncompeting species chemotaxis model 19:00 19:30 BADRALEXI Irina Stability analysis of some equilibrium points in a complex model for blood cells evolution in CML SECTION 8 - Theoretical Computer Science, Operations Research and Mathematical Programming room III.12 Chairman: Henri Luchian 11:30 12:30 ISTRAIL Sorin On Humans, Plants and Disease: Algorithmic Strategies for Haplotype Assembly Problems 13:00 15:00 LUNCH Special session: Logic in Computer Science Chairman: Laurentiu Leustean 15:00 16:00 ROSU Grigore Matching Logic 16:00 16:30 COFFEE BREAK 16:30 17:30 LUCANU Dorel Proving Reachability Properties by Circular Coinduction 17:30 18:30 RUSU Vlad The flow through fractured porous media along Beavers-Joseph interfaces 18:30 19:00 SERBANUTA Traian Pushdown Model Checking in the K Frammework

15 SATURDAY, June 27, 2015 SECTION 1: Algebra and Number Theory room III.11 Chairman: Dorin Popescu 9:00 10:00 WELKER Volkmar Ideals of orthogonal graph representations 10:00 10:30 VLADOIU Marius Bouquet Algebra of Toric Ideals 10:30 11:00 CONSTANTINESCU Castelnuovo-Mumford regularity and triangulations of manifolds Alexandru 11:00 11:30 COFFEE BREAK Chairman: Volkmar Welker 11:30 12:00 SECELEANU Alexandra Polynomial growth for Betti numbers 12:00 12:30 OLTEANU Anda - Classes of path ideals and their algebraic properties Georgiana 12:30 13:00 ENE Viviana Ideals of 2-minors 13:00 15:00 LUNCH Chairman: Dragoș Ștefan 15:00 15:30 BOTNARU Dumitru The duality (σ,τ) 15:30 16:00 CERBU Olga About B-inductive semireflexive spaces 16:00 16:30 COFFEE BREAK 16:30 17:00 CHIS Mihai Some properties of autocommutator subgroups of certain p-groups 17:00 17:30 SZOLLOSI Istvan Computation of Hall polynomials in the Euclidean case 17:30 18:00 COJUHARI Elena Skew ring extensions and generalized monoid rings 18:00 18:30 BALAN Adriana When Hopf monads are Frobenius 18:30 19:00 NICHITA Florin Nonassociative Structures, Yang-Baxter Equations and Applications Special session: Local rings and homological algebra. Special session dedicated to Prof. Nicolae Radu room 2.1 Chairman: Dumitru Stamate 15:00 15:30 Remember Nicolae Radu 15:30 16:00 POPESCU Dorin A theorem of Ploski's type 16:00 16:30 COFFEE BREAK 16:30 17:00 ENESCU Florian The Frobenius complexity of a local ring 17:00 17:30 VRACIU Adela Totally reflexive modules for Stanley-Reisner rings of graphs 17:30 18:00 VELICHE Oana Intersections and Sums of Gorenstein ideals 18:00 18:30 IACOB Alina Gorenstein projective precovers 18:30 19:00 CONSTANTINESCU Adrian Towards longer-range topological properties for finite generation of subalgebras SECTION 2 - Algebraic, Complex and Differential Geometry and Topology room Myller Chairman: Răzvan Liţcanu 9:00 10:00 MIRON Radu Lagrangian and Hamiltonian Geometries. Applications to Analytical Mechanics 10:00 11:00 VAISMAN Izu Generalized para-kähler manifolds 11:00 11:30 COFFEE BREAK Chairman: Izu Vaisman 11:30 12:30 BUCATARU Ioan Projective deformations for Finsler functions 12:30 13:00 CONSTANTINESCU Oana Geometric inverse problems in Lagrangian mechanics

16 13:00 15:00 LUNCH Chairman: Henri Moscovici 15:00 16:00 CALDARARU Andrei Towards a new algebraic proof of the Barannikov-Kontsevich theorem 16:00 16:30 COFFEE BREAK 16:30 17:30 TIMOFEEVA Nadezhda A compactification of moduli of stable vector bundles on a surface by locally free sheaves 17:30 18:30 SABAU Sorin Convexity on Finsler manifolds SECTION 3 - Real and Complex Analysis, Potential Theory room II.7 Chairman: Nicolae Popa 9:00 10:00 LIE Victor Extremizers for the 2D Kakeya problem 10:00 11:00 MUSCALU Camil Iterated Fourier series 11:00 11:30 COFFEE BREAK Joint Section 6 room III.9 11:30 12:30 TRUTNAU Gerald Recurrence criteria for diffusion processes generated by divergence free perturbations of non-symmetric energy forms 13:00 15:00 LUNCH Joint Section 6 room III.9 15:00 16:00 HSU Elton P Brownian Motion on Complex Structures 16:00 16:30 COFFEE BREAK Chairman: Gheorghe Bucur 16:30 17:00 ATANASIU Dragu A Cauchy Functional Inequality 17:00 17:30 SYMEONIDIS Harmonic families of closed surfaces Eleutherius 17:30 18:00 OPRINA Andrei - George Perturbations with kernels of the generator of a Markov process 18:00 18:30 VLADOIU Speranta Markov Processes on the Lipschitz Boundary for the Neumann and Robin Problems 18:30 19:00 MITROI - SYMEONIDIS Flavia - Corina On some properties of Tsallis hypoentropies and hypodivergences SECTION 4 - Ordinary and Partial Differential Equations, Variational Methods, Optimal Control room I.1 Chairman: Viorel Barbu 9:00 10:00 TATARU Daniel Long time dynamics for water waves 10:00 11:00 TURINICI Gabriel Mathematical models of vaccination: societal and invididual views 11:00 11:30 COFFEE BREAK Chairman: Ioan I. Vrabie 11:30 12:00 GILARDI Gianni Sliding modes for a phase field system 12:00 12:30 GRASSELLI Maurizio Nonlocal Cahn-Hilliard equations 12:30 13:00 FAVINI Angelo Inverse problems from control theory 13:00 15:00 LUNCH Chairman: Gianni Gilardi 15:00 15:30 GUIDETTI Davide On recostruction of a source term depending on time and space variables in a parabolic mixed problem 15:30 16:00 CERNEA Aurelian Existence results for a class of quadratic integral inclusions 16:00 16:30 COFFEE BREAK

17 Chairman: Maurizio Grasselli 16:30 17:00 COLLI Pierluigi Non-smooth regularization of a forward-backward parabolic equation 17:00 17:30 RADU Petronela Oscillational blow-up of traveling solutions in models for suspension bridges Chairman: Aurelian Cernea 17:30 18:00 VICOL Vlad Contrast between Lagrangian and Eulerian analytic regularity properties of Euler equations 18:00 18:30 BOCIU Lorena Controlling Turbulence in Fluid-Elasticity Interactions 18:30 19:00 LUCA TUDORACHE Rodica Positive solutions for a system of singular second-order integral boundary value problems Special session: Optimization and Games Theory Faculty Conference Room Chairman: Constantin Zalinescu 15:00 15:30 BOT Radu Ioan Primal-dual algorithms for complexly structured nonsmooth convex optimization problems 15:30 16:00 CSETNEK Ernoe Robert An inertial forward-backward algorithm for the minimization of the sum of two nonconvex functions 16:00 16:30 COFFEE BREAK Chairman: Radu Ioan Boţ 16:30 17:00 VOISEI Mircea The local equicontinuity of a maximal monotone operator and consequences 17:30 18:00 LOZOVANU Dmitrii Determining the Saddle Points for Antagonistic Positional Games in Markov Decision Processes 18:00 18:30 TKACENKO Alexandra The fractional multi-objective transportation problem of fuzzy type 18:30 19:00 UNGUREANU Valeriu Strategic Games, Information Leaks, Corruption, and Solution Principles SECTION 5 - Functional Analysis, Operator Theory and Operator Algebras, Mathematical Physics room II.5 Special session: Spectral Theory and Applications in Mathematical Physics Chairman: Claude-Alain Pillet 9:00 10:00 EXNER Pavel Approximating quantum graphs by Schrödinger operators on thin networks 10:00 11:00 NENCIU Irina On some criteria for quantum and stochastic confinement 11:00 11:30 COFFEE BREAK Chairman: Horia Cornean 11:30 12:30 SPARBER Christof Weakly nonlinear time-adiabatic theory 12:30 13:00 ANGHEL Nicolae Fredholmness vs. Spectral Discreteness for First-Order Differential Operators 13:00 15:00 LUNCH Chairman: Christof Sparber 15:00 16:00 NISTOR Victor Essential spectrum of N-body Hamiltonians with asymptotically homogeneous interactions 16:00 16:30 COFFEE BREAK Chairman: Florin Rădulescu 16:30 17:30 DADARLAT Marius A generalized Dixmier-Douady theory 17:30 18:00 DEACONU Valentin Symmetries of graph C*-algebras Chairman: Valentin Deaconu 18:00 18:30 DUMITRASCU A direct proof of K-amenability for a-t-menable groups Constantin Dorin 18:30 19:00 FURUICHI Shigeru Some inequalities related to operator means

18 19:00 19:30 POPA Ioan - Lucian Nonuniform Exponential Trichotomies in Terms of Lyapunov Functions SECTION 6 - Probability, Stochastic Analysis, and Mathematical Statistics room III.9 Chairman: Vic Patrangenaru 8:00 9:00 HUCKEMANN Stephan On Relations Between Statistics and Geometry Chairman: Vlad Bally 9:00 10:00 GRADINARU Mihai Nonlinear Langevin type equation driven by stable Levy process 10:00 11:00 LOECHERBACH Eva Propagation of chaos for systems of interacting neurons 11:00 11:30 COFFEE BREAK Chairman: Mihai Grădinaru 11:30 12:30 TRUTNAU Gerald Recurrence criteria for diffusion processes generated by divergence free perturbations of non-symmetric energy forms 12:30 13:00 ROBE - VOINEA Elena - Gratiela On the recursive evaluation of a certain multivariate compound distribution 13:00 15:00 LUNCH Chairman: Ionel Popescu 15:00 16:00 HSU Elton P Brownian Motion on Complex Structures 16:00 16:30 COFFEE BREAK 16:30 17:30 BARBU Vlad - Stefan Survival analysis for semi-markov systems Chairman: Lucian Maticiuc 17:30 18:00 CIUIU Daniel Bayesian good-of-fit tests: past, present and future 18:00 18:30 ANTON Cristina Statistical Analysis of a Cytotoxicity Model 18:30 19:00 CANEPA Elena Modeling and calibrating banks' demand deposits versus asset sizes SECTION 7 - Mechanics, Numerical Analysis, Mathematical Models in Sciences room I.3 Chairman: Viorel Barbu Joint Section 4 room I.1 9:00 10:00 TATARU Daniel Long time dynamics for water waves 10:00 11:00 TURINICI Gabriel Mathematical models of vaccination: societal and invididual views 11:00 11:30 COFFEE BREAK Joint Section 4 room I.1 11:30 12:00 GILARDI Gianni Sliding modes for a phase field system 12:00 12:30 GRASSELLI Maurizio Nonlocal Cahn-Hilliard equations 12:30 13:00 FAVINI Angelo Inverse problems from control theory 13:00 15:00 LUNCH Chairman: Liviu Marin 15:00 15:30 DELVARE Franck Fading regularization method for Cauchy problems associated with elliptic operators 15:30 16:00 PASCAN Raisa Elastoplastic models with continuously distributed defects: dislocations and disclinations, for finite and small strains 16:00 16:30 COFFEE BREAK Chairman: Sanda Ţigoiu 16:30 17:00 STRUGARU Magdalena Simulation of necking phenomenon in a polyconvex material 17:00 17:30 CRACIUN Eduard - Marius Cracks propagation in prestressed and prepolarized piezoelectric materials 17:30 18:00 CAPATINA Anca A quasistatic frictional contact problem with normal compliance and unilateral constraint

19 Special session: Mathematical Modeling of Some Medical and Biological Processes room II.6 Chairman: Andrei Halanay 15:00 15:30 POPOVICI Irina Border-Collision Bifurcations in A Piece-Wise Smooth Planar Dynamical System Associated with Cardiac Potential 15:30 16:00 KASLIK Eva Dynamical analysis of a fractional-order Hindmarsh-Rose model 16:00 16:30 COFFEE BREAK 16:30 17:00 RADULESCU Rodica Optimal control of Imatinib treatment in a competition model of Chronic Myelogenous Leukemia with immune response 17:00 17:30 TARFULEA Nicoleta A hybrid mathematical model for cell motility in angiogenesis 17:30 18:00 GEORGESCU Paul Mathematical insights and integrated strategies for the control of Aedes aegypti mosquito SECTION 8 - Theoretical Computer Science, Operations Research and Mathematical Programming room III.12 Special session: Logic in Computer Science Chairman: Grigore Roșu 9:00 10:00 MARDARE Radu Stone Dualities for Markov Processes 10:00 11:00 POPESCU Andrei A Conference Management System with Verified Document Confidentiality 11:00 11:30 COFFEE BREAK 11:30 12:00 BARONI Marian Alexandru Order locatedness and strong extensionality in constructive mathematics 12:00 12:30 SIPOS Andrei Codensity and Stone spaces 13:00 15:00 LUNCH Chairman: Adrian Iftene 15:00 16:00 BAZGAN Cristina Most vital elements of graphs 16:00 16:30 COFFEE BREAK 16:30 17:30 ZARA Catalin Tolerance Distances on Minimal Coverings 17:30 18:00 MANDRESCU Eugen The independence polynomial of a well-covered graph at -1 18:00 18:30 SIMION Emil Statistical tests in cryptographic evaluation 18:30 19:00 BARONI Mihaela Carmen Phylogenetic networks: mathematical models and algorithms MONDAY, June 29, 2015 SECTION 1: Algebra and Number Theory room III.11 Joint Section 3 room II.7 9:00 10:00 DEMETER Ciprian Decouplings and applications to Number Theory and PDEs Chairman: Daniel Bulacu 10:00 11:00 CHINDRIS Calin On the invariant theory of string algebras 11:00 11:30 COFFEE BREAK Chairman: Mihai Cipu 11:30 12:00 GROZA Ghiocel On the analytic functions with p-adic coefficients 12:00 12:30 BONCIOCAT Nicolae Ciprian Some applications of the resultant to factorization problems 12:30 13:00 COCONET Tiberiu Module covers and the Green correspondence 13:00 15:00 LUNCH

20 Chairman: Călin Chindriș 15:00 16:00 STANCU Radu Extentions of cohomological Mackey functors 16:00 16:30 COFFEE BREAK Chairman: Stefaan Caenepeel 16:30 17:00 RAIANU Serban A Coring Version of External Homogenization for Hopf Algebras 17:00 17:30 BULACU Daniel Frobenius and separable functors for the category of generalized entwined modules 17:30 18:00 MILITARU Gigel The factorization problem and related questions Chairman: Radu Stancu 18:00 18:30 BURCIU Sebastian On the irreducible representations of Drinfeld doubles 18:30 19:00 AGORE Ana Jacobi and Poisson algebras 19:00 19:30 TODEA Constantin - Cosmin Bockstein homomorphisms for Hochschild cohomology of group algebras and of block algebras of finite groups SECTION 2 - Algebraic, Complex and Differential Geometry and Topology room Myller Chairman: Liviu Ornea 9:00 10:00 MUNTEANU Ovidiu Four dimensional Ricci solitons 10:00 11:00 SUVAINA Ioana Asymptotically Locally Euclidean Complex Surfaces 11:00 11:30 COFFEE BREAK Chairman: Ioan Suvaina 11:30 12:30 VILCU Costin Baire categories for Alexandrov surfaces 12:30 13:00 CIOBAN Mitrofan Distances, boundedness and fixed point theory 13:00 13:30 COSTINESCU Cristian An equivariant generalization of the Segal's finiteness theorem 13:30 15:00 LUNCH Special session: Geometry and Topology of Differentiable Manifolds and Algebraic Varieties Chairman: Ștefan Papadima 15:00 16:00 MAXIM Laurentiu Motivic infinite cyclic covers 16:00 16:30 COFFEE BREAK 16:30 17:30 BURGHELEA Dan Monodromy / Alexander rational function of a circle valued map 17:30 18:30 NICOLAESCU Liviu A stochastic Gauss-Bonnet-Chern formula SECTION 3 - Real and Complex Analysis, Potential Theory room II.7 Chairman: Camil Muscalu 9:00 10:00 DEMETER Ciprian Decouplings and applications to Number Theory and PDEs 10:00 11:00 IORDAN Andrei Non existence of Levi flat hypersurfaces with positive normal bundle in compact K 11:00 11:30 COFFEE BREAK Chairman: Andrei Iordan 11:30 12:00 JOITA Cezar Finite coverings of complex spaces by connected Stein open sets 12:00 12:30 PREDA Ovidiu Locally Stein Open Subsets in Normal Stein Spaces 13:00 15:00 LUNCH Chairman: Elona Agora 15:00 15:30 MARCOCI Anca Nicoleta Improved Sobolev inequalities in the classical Lorentz spaces 15:30 16:00 MARCOCI Liviu Gabriel On some factorization results 16:00 16:30 COFFEE BREAK Chairman: Liviu Florescu 16:30 17:00 AGORA Elona Weak and strong type boundedness of Hardy-Littlewood maximal operator on weighted Lorentz spaces 17:00 17:30 MOCANU Marcelina Cheeger differentiable Orlicz-Sobolev functions on metric spaces 17:30 18:00 CRISTEA Mihai Some properties of open discrete ring mappings

21 18:00 18:30 APREUTESEI Gabriela Semiliniarity of space of sn-bounded multifunctions 18:30 19:00 DEGER Ugur On Approximation by Matrix Means of the Multiple Fourier Series in the Hölder 19:00 19:30 YASEMIN GOLBOL Sibel On Some Spaces of Sequences of Interval Numbers SECTION 4 - Ordinary and Partial Differential Equations, Variational Methods, Optimal Control room I.1 Chairman: Gabriel Turinici 9:00 10:00 MOSCO Umberto Time, grids, similarity 10:00 11:00 MARIS Mihai On some minimization problems in R N : the concentrationcompactness principle revisited 11:00 11:30 COFFEE BREAK Chairman: Daniel Tataru 11:30 12:00 TARFULEA Nicolae On Constrained Wave Propagation 12:00 12:30 KIRR Eduard - Wilhelm Large Solitary Waves via Global Bifurcation Methods 13:00 15:00 LUNCH Chairman: Mihai Mariș 15:00 15:30 IGNAT Liviu Dispersion property for Schrödinger equations 15:30 16:00 GUTU Valeriu Shadowing pseudo-orbits in set-valued dynamics 16:00 16:30 COFFEE BREAK Chairman: Liviu Ignat 16:30 17:00 SEREA Oana Discontinuous control problems and optimality conditions via occupational measures 17:00 17:20 SATCO Bianca Mild solutions for functional semilinear evolution equations Chairman: Valerian Gutu 17:20 17:40 RUSU Galina Some singularly perturbed Cauchy problems for abstract linear differential equations with positive powers of a positive defined operator 17:40 18:00 CIUBOTARU Stanislav Transvectants and Lyapunov quantities for bidimensional polynomial systems of differential equations with nonlinearities of the fourth degree 18:00 18:20 STANCU - DUMITRU Denisa A Baouendi-Grushin type operator in Orlicz-Sobolev spaces and applications to PDEs 18:20 18:40 BAKSI Ozlem Some inequalities about the eigenvalues of a two terms differential operator and the sum of the eigenvalues of that operator SECTION 5 - Functional Analysis, Operator Theory and Operator Algebras, Mathematical Physics room II.5 Special session: Dynamical Systems and Ergodic Theory Chairman: Florian-Petre Boca 9:00 9:30 MIHAILESCU Eugen Ergodic and metric properties of certain invariant measures on fractals 9:30 10:00 FALK Kurt Conformal ending measures on limit sets of Kleinian groups 10:00 10:30 RADU Remus Semi-indifferent dynamics 10:30 11:00 TANASE Raluca Stability and continuity of Julia sets in C 2 11:00 11:30 COFFEE BREAK

22 Chairman: Eugen Mihăilescu 11:30 12:30 BOCA Florin - Petre The distribution of rational numbers and ergodic theory 12:30 13:00 DUTKAY Dorin Fourier series on fractals 13:00 15:00 LUNCH Chairman: Nicolae Danet 15:00 15:30 PALTANEA Radu On equivalence of K-functionals and weighted moduli of continuity 15:30 16:00 TALPAU DIMITRIU Maria On some second order moduli of continuity 16:00 16:30 COFFEE BREAK Chairman: Florian-Horia Vasilescu 16:30 17:00 DANET Nicolae Closure sublinear operators and their use to the Dedekind completion of a Riesz space 17:00 17:30 DANET Rodica - Mihaela The most important challenge in the interval analysis. Historical notes and how we can overcome the barrier via extension results 17:30 18:00 POPESCU Marian - Valentin Collectively coincidence results in some classes of topological spaces Chairman: Cezar Joiţa 18:00 18:30 CATANA Viorel An example of twisted bi-laplacian and its spectral properties 18:30 19:00 DZHUNUSHALIEV Vladimir Supersymmetry, nonassociativity, and Big Numbers 19:00 19:30 SAH Ashok Kumar Irregular Weyl-Heisenberg wave packet frames generated by hyponormal operators SECTION 6 - Probability, Stochastic Analysis, and Mathematical Statistics room III.9 Chairman: Mihai Grădinaru 9:00 10:00 GOREAC Dan Asymptotic Control of Switch Processes in Systems Biology 10:00 11:00 PASCU Mihai N. Brownian Couplings and Applications 11:00 11:30 COFFEE BREAK 11:30 12:30 MATZINGER Henry Sample Size Needed for Estimating Principal Component 12:30 13:00 VON DAVIER Alina A. Psychometric Applications: Parameter Estimation and Comparability of Test Performance in Multistage Testing 13:00 15:00 LUNCH Chairman: Mihai Pascu 15:00 15:30 CIMPEAN Iulian A new approach to the existence of invariant measures for Markovian semigroups 15:30 16:00 CLIMESCU - HAULICA Adriana Voiculescu's free entropy and spectral analysis of random graphs 16:00 16:30 COFFEE BREAK Chairman: Traian Pîrvu 16:30 17:00 MOCIOALCA Oana Stochastic modeling of compositional data with diffusions 17:00 17:30 DE LA CRUZ CABRERA Stochastic aspects of Single Cell Analysis Omar 17:30 18:00 UNGUREAN Viorica Stabilizing solution for modified algebraic Riccati equations in infinite dimensions 18:00 18:30 SOOS Anna Stochastic spline fractal interpolation functions

23 SECTION 7 - Mechanics, Numerical Analysis, Mathematical Models in Sciences room I.3 Joint Section 4 room I.1 9:00 10:00 MOSCO Umberto Time, grids, similarity 10:00 11:00 MARIS Mihai On some minimization problems in R N : the concentrationcompactness principle revisited 11:00 11:30 COFFEE BREAK Chairman: Pierluigi Colli 11:30 12:00 IANNELLI Mimmo A model for describing the structure and growth of epidermis 12:00 12:30 CASCAVAL Radu Optimization and Control in Vascular Networks 13:00 15:00 LUNCH Chairman: Alain Miranville 15:00 15:30 POPA Constantin On Single Projection Kaczmarz Extended-Type Algorithms 15:30 16:00 GALES Catalin Bogdan Dynamics of space debris: resonances and long term orbital effects 16:00 16:30 COFFEE BREAK Chairman: Cecilia Cavaterra 16:30 17:00 PETCU Madalina Parallel matrix function evaluation via initial value ODE modelling 17:00 17:30 DRAGANESCU Andrei Optimal Order Multigrid Preconditioners for Linear Systems Arising in the Semismooth Newton Method Solution Process of a Class of Control-Constrained Problems 17:30 18:00 GHEORGHIU Calin - Ioan From Separation of Variables to Multiparameter Eigenvalue Problems. Numerical Aspects SECTION 8 - Theoretical Computer Science, Operations Research and Mathematical Programming room III.12 Special session: Logic in Computer Science Chairman: Radu Mardare 9:00 10:00 DIMA Catalin The automata-logic duality for temporal epistemic frameworks 10:00 11:00 TIPLEA Ferucio Laurentiu Symbolic and computational models for security policies and protocols 11:00 11:30 COFFEE BREAK Joint Section 9 room II.6 11:30 12:30 MARCUS Solomon Arrow and Conway in spectacle: the impossibilitytheorem and the cosmological theorem 13:00 15:00 LUNCH Special session: Logic in Computer Science Chairman: Cătălin Dima 15:00 16:00 MINEA Marius Modeling and verification of security for web applications and services 16:00 16:30 COFFEE BREAK 16:30 17:30 CIOBANU Gabriel Probabilistic Logic for Timed Migration 17:30 18:00 ARUSOAIE Andrei Language Independent Symbolic Execution 18:00 18:30 CIOBACA Stefan Proving Program Equivalence SECTION 9 - History and Philosophy of Mathematics room II.6 Chairman: Christophe Eckes 9:00 9:30 BARBOSU Mihai Mathematics: Current State and Future Direction 9:30 10:00 STEFANESCU Doru Petre Sergescu and the rebirthing of Bret's theorems

24 10:00 11:00 BRECHENMACHER Frederic The 1874 controversy between Camille Jordan and Leopold Kronecker 11:00 11:30 COFFEE BREAK Chairman: Dragoș Vaida 11:30 12:30 MARCUS Solomon Arrow and Conway in spectacle: the impossibilitytheorem and the cosmological theorem 13:00 15:00 LUNCH Chairman: Doru Ștefănescu 15:00 16:00 CIOBANU Gabriel Axiom of Choice in Finitely Supported Mathematics 16:00 16:30 COFFEE BREAK 16:30 17:30 VAIDA Dragos Dan Barbilian at the 120 years anniversary.the contribution of Dan Barbilian in the history and philosophy of mathematics 17:30 18:00 VERNESCU Andrei Some Aspects in the History of Mathematics in Romania TUESDAY, June 30 th SECTION 1: Algebra and Number Theory room III.11 Chairman: Adrian Diaconu 9:00 10:00 JONES Nathan The distribution of class groups of imaginary quadratic fields 10:00 11:00 COJOCARU Alina Arithmetic properties of the Frobenius traces of an abelian variety Carmen 11:00 11:30 COFFEE BREAK Chairman: Nathan Jones 11:30 12:00 NASTASESCU Constantin Are graded semisimple algebras symmetric? 12:00 12:30 RUDEANU Sergiu Most general forms in the study of Boolean equations 12:30 13:00 STEFANESCU Doru Irreducibility criteria for polynomials over discrete valuation domains 13:00 15:00 LUNCH Chairman: Alina Cojocaru 15:00 16:00 LENART Cristian A combinatorial model for Kirillov-Reshetikhin crystals and applications 16:00 16:30 COFFEE BREAK Chairman: Cristian Lenart 16:30 17:00 CIPU Mihai Recent advances in the study of Diophantine quintuples 17:00 17:30 ANTON Marian From class field to arithmetic group cohomology Chairman: Doru Ștefănescu 17:30 18:00 STAMATE Dumitru Ungraded strongly Koszul rings 18:00 18:30 CIMPOEAS Mircea On intersections of complete intersection ideals 18:30 19:00 ZAROJANU Andrei On the Stanley Depth POSTER SESSION - Sala Pașilor pierduţi POPOVICI Florin A Simple Proof of Fermat's Last Theorem for n=4 and n=6 19:00 19:30 SMITH - TONE Daniel Quantum-Resistant Public Key Cryptography YARAHMADI Zahra Ideal cimaximal graph and its application

25 SECTION 2 - Algebraic, Complex and Differential Geometry and Topology room Myller Chairman: Dan Burghelea 9:00 10:00 BERCEANU Barbu De la alfabetul Artin la alfabetul Garside Rudolf 10:00 11:00 SUCIU Alexandru Topology of complex line arrangements 11:00 11:30 COFFEE BREAK Chairman: Alexandru Suciu 11:30 12:30 PAUNESCU Laurentiu Proof of Whitney fibering conjecture 12:30 13:30 TIBAR Mihai Topology of real polynomial maps 13:30 15:00 LUNCH Chairman: Barbu Berceanu 15:00 16:00 MACINIC Anca (Multi)nets and monodromy 16:00 16:30 COFFEE BREAK 16:30 17:30 SECELEANU Alexandra Symbolic powers and line arrangements 17:30 18:30 POPESCU Clement Radu Flat connections and resonance varieties of rank larger than 1 POSTER SESSION - Sala Pașilor pierduţi CUZUB Stefan Andrei MASCA Ioana Monica 18:30 19:30 MUNTEANU Marius POPA Alexandru POPOVICI Elena Models of Belyi Covers On the geometry of Finsler manifolds with reversible geodesics Nonhomogeneous Metric Foliations Space duality as instrument for construction of new geometries On the volume of complex indicatrix SECTION 3 - Real and Complex Analysis, Potential Theory room II.7 Chairman: Liviu Ignat 9:00 9:30 CIRSTEA Florica Existence and classification of singular solutions to nonlinear elliptic equations with a gradient term 9:30 10:00 CAZACU Cristian Optimal Hardy constants for Schrodinger operators with multisingular inverse-square potentials Joint Section 6 room I.1 10:00 11:00 ROECKNER Michael A new approach to stochastic PDE 11:00 11:30 COFFEE BREAK Chairman: Constantin Niculescu 11:30 12:30 NISHIO Masaharu Harmonic Bergman spaces with radial measure weight on the ball 13:00 15:00 LUNCH Chairman: Nicolae Pascu 15:00 15:30 BREAZ Nicoleta Mocanu and Serb univalence criteria for some integral operators 15:30 16:00 BREAZ Daniel Some new classes of analytic functions 16:00 16:30 COFFEE BREAK Chairman: Masaharu Nishio 16:30 17:00 FLORESCU Liviu Direct methods through convergence in measure 17:00 17:30 BENFRIHA Habib Nearly saturation, balayage and fine carrier in excessive structures 17:30 18:00 ANDREI Anca On Loewner domains in metric spaces 18:00 18:30 PASCU Nicolae Univalence Criteria for analytic functions defined in non-convex domains 18:30 19:00 MINCULETE Nicusor An improvement of Gruss inequality

26 SECTION 4 - Ordinary and Partial Differential Equations, Variational Methods, Optimal Control room II.4 Chairman: Sorin Micu 9:00 9:30 BOCEA Marian Relaxation and Duality for the L Optimal Mass Transport Problem 9:30 10:00 CASTRO Carlos Null controllability of coupled systems of PDE's Joint Section 6 room I.1 10:00 11:00 ROECKNER Michael A new approach to stochastic PDE 11:00 11:30 COFFEE BREAK Chairman: Radu Precup 11:30 12:00 GAL Ciprian G On reaction-diffusion equations with anomalous diffusion and various boundary conditions 12:00 12:30 PERJAN Andrei Singularly perturbed problems for abstract differential equations of second order in Hilbert spaces 12:30 13:00 DRAGAN Vasile On the bounded and stabilizing solution of a generalized Riccati differential 13:00 15:00 LUNCH Chairman: Carlos Castro 15:00 15:30 SHIRIKYAN Armen Global stabilisation for damped-driven conservation laws 15:30 16:00 ZARNESCU Arghir Partial regularity and smooth topology-preserving approximations of rough domains 16:00 16:30 COFFEE BREAK Chairman: Andrei Perjan 16:30 17:00 VARVARUCA Eugen Global bifurcation of steady gravity water waves with critical layers POSTER SESSION Sala Pașilor pierduţi ARAMA Bianca - Elena ISAIA Florin KIZILBUDAK CALISKAN Seda 17:00 18:00 MUNTEANU Laura NEGRESCU Alexandru OMAR Benniche OZCUBUKCU Zerrin The cost of approximate controllability and an unique continuation result at initial time for the Ginzburg-Landau equation Non-existence results of higher-order regular solutions for the p(x)- Laplacian Calculated of regularized trace of a fourth order regular differential equation An Algorithm for Generating Maximal Simulation Relations in Geometric Control Theory Controllability for the vibrating string equation with Neumann boundary conditions Approximate viability on graphs Calculated the regularized trace of a fourth order regular differential equation SECTION 5 - Functional Analysis, Operator Theory and Operator Algebras, Mathematical Physics room II.5 Chairman: Nicolae Popa 9:00 9:30 COSTARA Constantin Complex analysis and spectral isometries 9:30 10:00 GOK Omer On Boolean Algebras of Projections of Finite Multiplicity 10:00 10:30 GHEONDEA Aurelian Interpolation for completely positive maps 10:30 11:00 OLTEANU Cristian Octav On Markov moment problem and its applications 11:00 11:30 COFFEE BREAK Chairman: Constantin Costara 11:30 12:00 VALUSESCU Ilie On the maximal function model of a contraction operator 12:00 12:30 POPA Nicolae Abel-Schur multipliers on Banach spaces of infinite matrices

27 12:30 13:00 BADEA Gabriela On the summing properties of the multilinear operators on a cartezian product of c {0} (X) spaces 13:00 15:00 LUNCH Chairman: Serban Stratila 15:00 16:00 ZSIDO Laszlo Hilbert Space Geometry problems occurring in the Tomita-Takesaki Theory 16:00 16:30 COFFEE BREAK Chairman: Laszlo Zsido 16:30 17:30 STRATILA Serban Commutation and Splitting Theorems for von Neumann Algebras 17:30 18:00 PAUNESCU Liviu Almost commuting permutations are near commuting permutations 18:00 18:30 JOITA Maria Pro-C*-correspondences Chairman: Radu Purice 18:30 19:00 MUNTEANU Radu Non singular automorphisms and dimension spaces 19:00 19:30 MORADI Sirous On a generalization of Ciric fixed point in best approximation SECTION 6 - Probability, Stochastic Analysis, and Mathematical Statistics III.9 Chairman: Gerald Trutnau 9:00 10:00 LUPASCU Oana Branching processes and the fragmentation equation 10:00 11:00 ROECKNER Michael A new approach to stochastic PDE 11:00 11:30 COFFEE BREAK Chairman: Oana Lupașcu 11:30 12:00 NOVAC Ludmila Approach of the Currency Exchange Risk 17:00 17:30 LAZARI Alexandru Geometric Programming Models for Dynamical Decision Stochastic Systems with Final Sequence of States 13:00 15:00 LUNCH 15:00 15:30 TONE Cristina A new approach to the existence of invariant measures for Markovian semigroups 16:00 16:30 COFFEE BREAK SECTION 7 - Mechanics, Numerical Analysis, Mathematical Models in Sciences room I.3 Chairman: Mădălina Petcu 9:00 9:30 OPREA Iuliana Spatiotemporal compex dynamics in anisotropic fluids 9:30 10:00 CARABINEANU Aerodynamics coefficients of a thin oscillating airfoil in subsonic flow Adrian 10:00 10:30 BIRSAN Mircea On the 6-parameter shell model derived from the three-dimensional Cosserat theory of elasticity 11:00 11:30 COFFEE BREAK Chairman: Doru Suran 11:30 12:00 BARBOSU Mihai RIT's Cubesat Project 12:00 12:30 CHIRUTA Ciprian Rein's Model for the Restricted Eliptic Three-Body Problem with drag 13:00 15:00 LUNCH Chairman: Ciprian Chiruţă 15:00 15:30 PRICOPI Dumitru Modelling of pulsations of giant stars 15:30 16:00 SURAN Marian Doru Exploring the Space of Stellar Parameters for PLATO2 Space Mission Targets Using CESAM2k and LNAWENR/ROMOSC Codes 16:00 16:30 COFFEE BREAK

28 POSTER SESSION - Sala Pașilor pierduţi BUCUR Andreea - Valentina CONSTANTIN Diana Rodica DMITRIEVA Irina SECRIERU Ivan MIGDALOVICI Marcel MOROSANU Costică NEDELCU Dan Alin 16:30 18:30 MUNTEAN Angela NICOLESCU Bogdan POP Nicolae POPESCU Emil POPESCU Nedelia Antonia RIBACOVA Galina SADIKU Murat SEICIUC Vladislav VLAD Serban E. Some non-standard problems related with the mathematical model of thermoviscoelasticity with voids The Black Hole Effect and thegravitational Redshift Computation in the Frame of Post Newtonian Type Garavitational Fields Investigation of Specific Electromagnetic Field Problems Using Systems of Partial Differential Equations The stable approximate schemes for the evolution equation of the plane fractional diffusion process On the separation property between stable and unstable zones of the dynamical systems and it implications Well-posedness for a phase-field transition system endowed with a polynomial nonlinearity and a general class of nonlinear dynamic boundary conditions The J5:2 mean motion resonance as a new source of H-chondrites On the raindrop motion Some considerations on Reynolds' equation for the lubricant thin films Quasistatic contact problems for viscoelastic bodies Two-body problem associated to Buckingham potential Fractional kinetic equations as a model of intermittent bursts in solar wind turbulence Computational scheme for drift-diffusion equations in multiply connected domain Algorithms for Accelerating Convergence of Power Series by means of Euler Type Operators Direct-approximate methods in solving some classes of singular integral equations defined on arbitrary smooth closed contours Asynchronous flows: the technical condition of proper operation and its generalization SECTION 8 - Theoretical Computer Science, Operations Research and Mathematical Programming room III.12 Special session: Logic in Computer Science Chairman: Gabriel Ciobanu 9:00 10:00 PRUNESCU Mihai Recurrent many-dimensional sequences over finite alphabets 10:00 11:00 PETRE Luigia A Theory of Service Composition 11:00 11:30 COFFEE BREAK 11:30 12:00 DIACONESCU Denisa Automata, Logic and Stone Duality 12:00 12:30 POPOVICI Matei Semantic variants of (truely) perfect recall in Alternating-Time Temporal Logic 13:00 15:00 LUNCH Chairman: Cristina Bâzgan 15:00 16:00 PETRE Ion Modeling with Exploration Systems 16:00 16:30 COFFEE BREAK 16:30 17:30 AMAN Bogdan Mobility Types for Cloud Computing 17:30 18:00 TACHE Rozica - Maria Extremal cacti graphs for general sum-connectivity index and Narumi-Katayama index

29 SECTION 9 - History and Philosophy of Mathematics room II.6 Chairman: Frederic Brechenmacher 9:00 9:30 GIURGESCU Patricia Aspects of parameter estimation 9:30 10:30 ECKES Christophe The correspondence between Hermann Weyl and Erich Hecke 10:30 11:00 NICULESCU Constantin Tiberiu Popoviciu and his contribution to convex functions theory 11:00 11:30 COFFEE BREAK Chairman: Constantin Niculescu 11:30 12:30 DEACONESCU Marian Mathematical archaeology: Art Nouveau 12:30 13:00 IONITA Cătălin The Concept of a Real Definition and that of Real Numbers 13:00 15:00 LUNCH WEDNESDAY, July 1 st SECTION 1: Algebra and Number Theory room Myller Chairman: Andrei Marcus 9:00 10:00 POPA Alexandru On the trace formula for Hecke operators Anton 10:00 11:00 DIACONU Adrian Non-vanishing of quadratic twists of automorphic L-functions 11:00 11:30 COFFEE BREAK Chairman: Alexandru Popa 11:30 12:00 PASOL Vicentiu p-adic Analytic Functions from Recurrence Sequences 12:00 12:30 COBELI Cristian On the Dew Line in Circle Packings SECTION 3 - Real and Complex Analysis, Potential Theory room II.7 Chairman: Marcelina Mocanu 9:00 9:30 NEAGU Vasile On the algebra of singular operators with shift 9:30 10:00 GHISA Dorin On the Location of the Zeros of Bohr Functions 10:00 10:30 OROS Georgia Irina Strong differential superordination and Sandwich theorem obtained with some new integral operators 11:00 11:30 COFFEE BREAK SECTION 5 - Functional Analysis, Operator Theory and Operator Algebras, Mathematical Physics room II.5 Chairman: Aurelian Gheondea 9:00 9:30 SEZER Yonca About The Regularized Trace Of A Self Adjoint Differential Operator 9:30 10:00 NOMURA Takaaki Realizing homogeneous cones through oriented graphs 10:00 10:30 CROITORU Anca On weak linear spaces 10:30 11:00 STAMATE Elena - Vector integrals for multifunctions Cristina 11:00 11:30 COFFEE BREAK Chairman: Dan Timotin 11:30 12:00 POSTOLICA Vasile Isac's cones 12:00 12:30 SHARMA Preeti On approximation properties of generalization of Kantorovich-type discrete q-beta operators

30 ABSTRACT

31 Section 1 Algebra and Number Theory Jacobi and Poisson algebras AGORE Ana Vrije Universiteit Brussel, Belgium Coauthors: G. Militaru Jacobi/Poisson algebras are algebraic counterparts of Jacobi/Poisson manifolds. We introduce representations of a Jacobi algebra A and Frobenius Jacobi algebras as symmetric objects in the category. A characterization theorem for Frobenius Jacobi algebras is given in terms of integrals on Jacobi algebras. For a vector space V a non-abelian cohomological type object JH 2, (V,,A) is constructed: it classifies all Jacobi algebras containing A as a subalgebra of codimension equal to dim(v ). Representations of A areusedinorderto give the decomposition of JH 2, (V,,A) as a coproduct over all Jacobi A-module structures on V. The bicrossed product P bowtieq of two Poisson algebras recently introduced by Ni and Bai appears as a special case of our construction. A new type of deformations of a given Poisson algebra Q is introduced and a cohomological type object HA 2 (P,,Q (,,,,,, )) is explicitly constructed as a classifying set for the bicrossed descent problem for extensions of Poisson algebras. Several examples and applications are provided. From class field to arithmetic group cohomology ANTON Marian Central Connecticut State University and IMAR, USA and Romania There are a few known examples of arithmetic groups for which the mod p cohomology is a free module over the ring of Chern classes. A. D. Rahm and M. Wendt have recently conjectured that this property is true for a class of arithmetic groups if the rank of the group is smaller than p and each cohomology class is detected on some finite subgroup. In this talk we present a preliminary report on the current status of their conjecture. When Hopf monads are Frobenius BALAN Adriana Simion Stoilow Institute of Mathematics of the Romanian Academy, Romania Under suitable exactness assumptions, a Hopf monad T on a monoidal category C having as right adjoint a Hopf comonad G is shown to be also a Frobenius monad, if TI and GI are isomorphic (right) Hopf T -modules (in particular, TI is a Frobenius algebra), where I denotes the unit object of C. If additionally the underlying base category is autonomous, then a Hopf monad T becomes also a Frobenius monoidal functor. 37

32 38 Some applications of the resultant to factorization problems BONCIOCAT Nicolae Ciprian Simion Stoilow Institute of Mathematics of the Romanian Academy, Romania We present a method to obtain information on the factorization of two polynomials using the canonical decomposition of their resultant. In particular we obtain irreducibility criteria for pairs of polynomials whose resultant is a prime number. As another application we provide irreducibility conditions for polynomials that take a prime value, and for polynomials obtained by expressing prime numbers by quadratic forms. The use of the resultant in the study of linear combinations of relatively prime polynomials is also discussed. Similar results will be provided for multivariate polynomials over an arbitrary field. We will finally give a method to compute the resultant using linear recurrence sequences. The duality (σ, τ ) BOTNARU Dumitru State University from Tiraspol, Moldova In the category C 2 V of the locally convex topological vector Hausdorff spaces we denote by B the class of bijective morphisms b :(E,u) (F, v) forwhich(e,u) =(F, v) and R ε ε (S) the class of all reflective subcategories R is closed under B-subobjects and B-factorobjects. Let S be the subcategory of the spaces with weak topology, Γ 0 - the subcategory of locally complete spaces, and R the lattice of all nonzero reflective subcategories. Theorem 1. For any element R R ε ε (S) there is an element Γ R so that Γ 0 Γ and R = S sr Γ 0,whereS sr Γ 0 is the semireflexive product of the elements S and Γ (see [1]). For any morphism f :(E,u) (F, v) we take in correspondence the morphism f : F τ Eτ, where the dual spaces possess the Mackey topology. There was defined a contravariant functor d τ : C 2 V C 2 V. Theorem 2. The functor d τ is right exact and transfers the products into sums. Denote by M the coreflective subcategory of the spaces with Mackey topology, K( M) the class of the coreflective subcategories that is contained in the M subcategory. For any A C 2 V subcategory we denote by δ(a) the full subcategory from C 2 V defined on the class of object {d τ (X) X A }. If A K( M) denotebyδ 1 (A) the full subcategory from C 2 V defined by the class of objects {X C 2 V,d τ (X) A }. Theorem If R R, then δ(r) K( M). 2. If A K( M), then δ 1 (A) R ε ε (S). 3. Let C Rand R R. Thenδ(R) = M. 4. Let R R. Then M d R = δ 1 δ(r), where M d R is the right product of the M and R elements (see [2]). 5. Let R R. Thenδ 1 δ(r) is the first element of the class R ε ε(s) that contains the R element. 6. The maple δ sets an isomorphism of the R ε ε(s) and K( M) δ : R ε ε (S) K( M) lattices. 7. The lattices R ε ε (S) and M contains a proper class of elements. References 1. Botnaru D., Cerbu O. Semireflexive product of two subcategories, Proc. of the 6 th Congress of Romanian Math., Bucharest, 2007, v.1, p Botnaru D., Turcanu A. The factorization of the right product of two subcategories, ROMAI J., 2010, v.vi, Nr.2, p Pure semisimple rings and direct products BREAZ Simion Babes-Bolyai University, Romania