Jean-Paul Brasselet on his 60 th birthday

Size: px
Start display at page:

Download "Jean-Paul Brasselet on his 60 th birthday"

Transcription

1 Proceedings of the 2005 Marseille Singularity School and Conference SINGULARITY THEORY Jean-Paul Brasselet on his 60 th birthday CIRM, Marseille, France 24 January - 25 February 2005 Editors Denis Cheniot Nicolas Dutertre Claudio Murolo David Trotman University of Provence, France Anne Pichon University of Mediterranee, France C SCIENCES AJX-»«RSEIUEII UNIVERSITY World Scientific NEW JERSEY LONDON SINGAPORE BEIJING SHANGHAI HONG KONG TAIPEI CHENNAI

2 CONTENTS Introduction vii Part I: Five Courses on Singularity Theory 1 The Schwartz Classes of Complex Analytic Singular Varieties Jean-Paul Brasselet 3 Desingularization of Ideals and Varieties Herwig Hauser 33 Lectures on Topology of Complements and Fundamental Groups A. Libgober 71 Lectures on Real Stratification Theory David Trotman 139 Lagrangian and Legendrian Singularities F. V. Goryunov and V. M. Zakalyukin 157 Part II: Applications of Singularity Theory 187 Singularities of Robot Manipulators P. S. Donelan 189 Singularity and Stratification Theory Applied to Dynamical Systems Michael Field 219 Differential Geometry from the View Point of Lagrangian or Legendrian Singularity Theory Shyuichi Izumiya 241 Caustics and Visualization Techniques A. Joets 277 Singularities and Genericity in Medical Imaging: Old and New Yannick L. Kergosien 285 xiii

3 xiv Geometric Contacts and 2-Regularity of Surfaces in Euclidean Space Maria Del Carmen Romero-Fuster 307 Geometry of Resonance Tongues Henk W. Broer, Martin Golubitsky and Gert Vegter 327 Generic Singularities of Surfaces Y. Yomdin 357 Part III: Geometry and Topology of Singularities 377 Hodge-Riemann Relations for Polytopes: A Geometric Approach Gottfried Barthel, Ludger Kaup, J.-P. Brasselet and Karl-Heinz Fieseler 379 On Rational Cuspidal Plane Curves, Open Surfaces and Local Singularities J. Fernandez de Bobadilla, I. Luengo, A. Melle-Hernandez and A. Nemethi 411 A Homological Approach to Singular Reduction in Deformation Quantization Martin Bordemann, Hans-Christian Herbig and Markus J. Pflaum 443 Differentiability and Composite Functions S. Bromberg and S. Lopez de Medrano 463 Contact Structures and Non-Isolated Singularities Clement Caubel 475 On Local Reduction Theorems for Singular Symplectic Forms on a 4-Dimensional Manifold W. Domitrz 487 Devissage de la forme de Seifert Entiere des Germes de Courbe Plane a Deux Branches Philippe Du Bois et Emmanuel Robin 503

4 XV Chern Obstructions for Collections of 1-Forms on Singular Varieties W. Ebeling and S. M. Gusein-Zade 557 The Finite Generation of the Monoid of Effective Divisor Classes on Platonic Rational Surfaces G. Failla, M. Lahyane and G. Molica Bisci 565 An Application of Resolution of Singularities: Computing the Topological -Function of Isolated Surface Singularities in (C 3,0) Anne Friihbis-Kruger 577 Global Properties of Integrable Implicit Hamiltonian Systems Takuo Fukuda and Stanislaw Janeczko 593 Motivic Vanishing Cycles and Applications Gil Guibert 613 Complements of Hypersurfaces and Equisingularity H. A. Hamm 625 A General Image Computing Spectral Sequence Kevin Houston 651 Generic Sections of Singularities Li Dung Trdng 677 Morse-Smale-Witten Complex for Gradient-Like Vector Fields on Stratified Spaces Ursula Ludwig 683 Some Obstructed Equisingular Familis of Curves on Surfaces in P 3 Thomas Markwig 715 On the Alexander Invariants of Hypersurface Complements Laurentiu Maxim 725 The Boundary of the Milnor Fiber of Hirzebruch Surface Singularities Francoise Michel, Anne Pichon and Claude Weber 745

5 XVI A Survey on Stratified Transversality Claudio Murolo 761 Graph 3-Manifolds, Splice Diagrams, Singularities Walter D. Neumann 787 Rigid Geometry and the Monodromy Conjecture Johannes Nicaise and Julien Sebag 819 Zariski Pairs on Sextics II Mutsuo Oka 837 A Survey of Characteristic Classes of Singular Spaces Jorg Schurmann and Shoji Yokura 865 Indices of Vector Fields on Singular Varieties: An Overview Jose Seade 953 Direct Connections and Chern Character Nicolae Teleman 977 Logarithmic Comparison Theorem and P-Modules: An Overview Tristan Torrelli 995 On Torsion in Homology of Singular Toric Varieties Andrzej Weber Centre Symmetry Sets and Other Invariants of Algebraic Sets Mariusz Zajac 1019 Pictures of the Participants 1031 Programs 1041 List of Participants 1051

Submanifolds of. Total Mean Curvature and. Finite Type. Bang-Yen Chen. Series in Pure Mathematics Volume. Second Edition.

Submanifolds of. Total Mean Curvature and. Finite Type. Bang-Yen Chen. Series in Pure Mathematics Volume. Second Edition. le 27 AIPEI CHENNAI TAIPEI - Series in Pure Mathematics Volume 27 Total Mean Curvature and Submanifolds of Finite Type Second Edition Bang-Yen Chen Michigan State University, USA World Scientific NEW JERSEY

More information

arxiv: v1 [math.ag] 24 Apr 2015

arxiv: v1 [math.ag] 24 Apr 2015 GENERIC SECTIONS OF ESSENTIALLY ISOLATED DETERMINANTAL SINGULARITIES arxiv:1504.06518v1 [math.ag] 24 Apr 2015 JEAN-PAUL BRASSELET, NANCY CHACHAPOYAS AND MARIA A. S. RUAS Abstract. We study the essentially

More information

SINGULARITIES SYMPOSIUM ŁOJASIEWICZ 70. Editors of the Volume

SINGULARITIES SYMPOSIUM ŁOJASIEWICZ 70. Editors of the Volume SINGULARITIES SYMPOSIUM ŁOJASIEWICZ 70 Editors of the Volume BRONIS LAW JAKUBCZYK WIES LAW PAW LUCKI JACEK STASICA WARSZAWA1998 SINGULARITIES SYMPOSIUM LOJASIEWICZ 70 BANACH CENTER PUBLICATIONS, VOLUME

More information

Géométrie Lipschitz des singularités Lipschitz Geometry of Singularities. Courses

Géométrie Lipschitz des singularités Lipschitz Geometry of Singularities. Courses Immanuel Halupczok Lipschitz stratifications Géométrie Lipschitz des singularités Lipschitz Geometry of Singularities Marseille, 7-10 november 2017 Program Courses 3 one-hour lectures Abstract. To understand

More information

Isolated singularities in analytic spaces

Isolated singularities in analytic spaces Isolated singularities in analytic spaces José Seade These are notes for my lectures at the meeting On the Geometry and Topology of Singularities, in honor of the 60th Birthday of Lê Dũng Tráng. The aim

More information

ALEXANDER INVARIANTS OF HYPERSURFACE COMPLEMENTS

ALEXANDER INVARIANTS OF HYPERSURFACE COMPLEMENTS ALEXANDER INVARIANTS OF HYPERSURFACE COMPLEMENTS LAURENTIU MAXIM Abstract. These are notes I wrote for a series of lectures I gave at Tokyo University of Sciences and The University of Tokyo, Tokyo, Japan,

More information

Remarks on the Milnor number

Remarks on the Milnor number José 1 1 Instituto de Matemáticas, Universidad Nacional Autónoma de México. Liverpool, U. K. March, 2016 In honour of Victor!! 1 The Milnor number Consider a holomorphic map-germ f : (C n+1, 0) (C, 0)

More information

http://dx.doi.org/10.1090/pspum/003 DIFFERENTIAL GEOMETRY PROCEEDINGS OF THE THIRD SYMPOSIUM IN PURE MATHEMATICS OF THE AMERICAN MATHEMATICAL SOCIETY Held at the University of Arizona Tucson, Arizona February

More information

On the Alexander invariants of hypersurface complements

On the Alexander invariants of hypersurface complements 1 On the Alexander invariants of hypersurface complements Laurentiu Maxim Department of Mathematics, University of Illinois at Chicago, 851 S. Morgan St., Chicago, Illinois, 60607, USA E-mail: lmaxim@math.uic.edu

More information

arxiv: v2 [math.ag] 22 Jun 2011 Milnor fiber boundary of a non isolated surface singularity

arxiv: v2 [math.ag] 22 Jun 2011 Milnor fiber boundary of a non isolated surface singularity András Némethi, Ágnes Szilárd arxiv:0909.0354v2 [math.ag] 22 Jun 2011 Milnor fiber boundary of a non isolated surface singularity May 31, 2018 Springer Contents 1 Introduction...................................................

More information

HODGE GENERA OF ALGEBRAIC VARIETIES, II.

HODGE GENERA OF ALGEBRAIC VARIETIES, II. HODGE GENERA OF ALGEBRAIC VARIETIES, II. SYLVAIN E. CAPPELL, ANATOLY LIBGOBER, LAURENTIU MAXIM, AND JULIUS L. SHANESON Abstract. We study the behavior of Hodge-theoretic genera under morphisms of complex

More information

Determinantal Singularities. Abstracts Workshop at the Riemann Center, Leibniz Universität Hannover, March 5 9, 2018

Determinantal Singularities. Abstracts Workshop at the Riemann Center, Leibniz Universität Hannover, March 5 9, 2018 Determinantal Singularities Abstracts Workshop at the Riemann Center, Leibniz Universität Hannover, March 5 9, 2018 Schedule Monday Tuesday Wednesday Thursday Friday 9:15 10:15 V. Goryunov W. Ebeling T.

More information

HODGE POLYNOMIALS OF SINGULAR HYPERSURFACES ANATOLY LIBGOBER AND LAURENTIU MAXIM

HODGE POLYNOMIALS OF SINGULAR HYPERSURFACES ANATOLY LIBGOBER AND LAURENTIU MAXIM HODGE POLYNOMIALS OF SINGULAR HYPERSURFACES ANATOLY LIBGOBER AND LAURENTIU MAXIM Abstract. We express the difference between the Hodge polynomials of the singular and resp. generic member of a pencil of

More information

On the spectrum of curve singularities

On the spectrum of curve singularities On the spectrum of curve singularities by András Némethi The Ohio State University Columbus, OH 43210, USA. Dedicated to Egbert Brieskorn on the occasion of his 60th birthday 1. Introduction There is the

More information

Real Singularities in Complex Geometry

Real Singularities in Complex Geometry José 1 1 Instituto de Matemáticas, Unidad Cuernavaca, Universidad Nacional Autónoma de México. Jaca, España, junio de 2009 En honor a Tolya, por sus 60!!! Anatoly Libgober s work is a beautiful example

More information

Reciprocal polar varieties

Reciprocal polar varieties Reciprocal polar varieties Ragni Piene Israel 70 Belo Horizonte November 7, 2018 Arcata 1974 Polar varieties Let X P(V ) = P n be a projective variety of dimension m, and L k P n a linear subspace of codimension

More information

Oberseminar Kaiserslautern-Mannheim WS 2012/2013

Oberseminar Kaiserslautern-Mannheim WS 2012/2013 Oberseminar Kaiserslautern-Mannheim WS 2012/2013 Hodge theory, D-Modules and non-isolated singularities Introduction The overall aim of the seminar is a deeper understanding of topological, differential

More information

arxiv:math/ v2 [math.at] 2 Oct 2004

arxiv:math/ v2 [math.at] 2 Oct 2004 arxiv:math/0409412v2 [math.at] 2 Oct 2004 INTERSECTION HOMOLOGY AND ALEXANDER MODULES OF HYPERSURFACE COMPLEMENTS LAURENTIU MAXIM Abstract. Let V be a degree d, reduced, projective hypersurface in CP n+1,

More information

Pietro Fre' SISSA-Trieste. Paolo Soriani University degli Studi di Milano. From Calabi-Yau manifolds to topological field theories

Pietro Fre' SISSA-Trieste. Paolo Soriani University degli Studi di Milano. From Calabi-Yau manifolds to topological field theories From Calabi-Yau manifolds to topological field theories Pietro Fre' SISSA-Trieste Paolo Soriani University degli Studi di Milano World Scientific Singapore New Jersey London Hong Kong CONTENTS 1 AN INTRODUCTION

More information

Enumerative Invariants in Algebraic Geometry and String Theory

Enumerative Invariants in Algebraic Geometry and String Theory Dan Abramovich -. Marcos Marino Michael Thaddeus Ravi Vakil Enumerative Invariants in Algebraic Geometry and String Theory Lectures given at the C.I.M.E. Summer School held in Cetraro, Italy June 6-11,

More information

Algebraic Curves and Riemann Surfaces

Algebraic Curves and Riemann Surfaces Algebraic Curves and Riemann Surfaces Rick Miranda Graduate Studies in Mathematics Volume 5 If American Mathematical Society Contents Preface xix Chapter I. Riemann Surfaces: Basic Definitions 1 1. Complex

More information

TOPOLOGY OF PLANE ALGEBRAIC CURVES: THE ALGEBRAIC APPROACH. Alex Degtyarev

TOPOLOGY OF PLANE ALGEBRAIC CURVES: THE ALGEBRAIC APPROACH. Alex Degtyarev TOPOLOGY OF PLANE ALGEBRAIC CURVES: THE ALGEBRAIC APPROACH Alex Degtyarev Abstract. We discuss the principle tools and results and state a few open problems concerning the classification and topology of

More information

SINGULARITIES AND THEIR DEFORMATIONS: HOW THEY CHANGE THE SHAPE AND VIEW OF OBJECTS

SINGULARITIES AND THEIR DEFORMATIONS: HOW THEY CHANGE THE SHAPE AND VIEW OF OBJECTS SINGULARITIES AND THEIR DEFORMATIONS: HOW THEY CHANGE THE SHAPE AND VIEW OF OBJECTS ALEXANDRU DIMCA Abstract. We show how the presence of singularities affect the geometry of complex projective hypersurfaces

More information

arxiv:math/ v3 [math.at] 1 Jul 2007

arxiv:math/ v3 [math.at] 1 Jul 2007 EULER CHARACTERISTICS OF ALGEBRAIC VARIETIES SYLVAIN E. CAPPELL, LAURENTIU MAXIM, AND JULIUS L. SHANESON arxiv:math/0606654v3 [math.at] 1 Jul 2007 Abstract. This note studies the behavior of Euler characteristics

More information

Beyond Mumford s theorem on normal surfaces

Beyond Mumford s theorem on normal surfaces Bull. Math. Soc. Sci. Math. Roumanie Tome 57(105) No. 2, 2014, 217 223 Beyond Mumford s theorem on normal surfaces by Mihai Tibăr To Mihnea Colţoiu, on the occasion of a great anniversary Abstract Beyond

More information

L 2 BETTI NUMBERS OF HYPERSURFACE COMPLEMENTS

L 2 BETTI NUMBERS OF HYPERSURFACE COMPLEMENTS L 2 BETTI NUMBERS OF HYPERSURFACE COMPLEMENTS LAURENTIU MAXIM Abstract. In [DJL07] it was shown that if A is an affine hyperplane arrangement in C n, then at most one of the L 2 Betti numbers i (C n \

More information

DIFFERENTIAL GEOMETRY APPLIED TO DYNAMICAL SYSTEMS

DIFFERENTIAL GEOMETRY APPLIED TO DYNAMICAL SYSTEMS WORLD SCIENTIFIC SERIES ON NONLINEAR SCIENCE Series Editor: Leon O. Chua Series A Vol. 66 DIFFERENTIAL GEOMETRY APPLIED TO DYNAMICAL SYSTEMS Jean-Marc Ginoux Université du Sud, France World Scientific

More information

Knots and Mirror Symmetry. Mina Aganagic UC Berkeley

Knots and Mirror Symmetry. Mina Aganagic UC Berkeley Knots and Mirror Symmetry Mina Aganagic UC Berkeley 1 Quantum physics has played a central role in answering the basic question in knot theory: When are two knots distinct? 2 Witten explained in 88, that

More information

. A formula for the geometric genus of surface singularities. Tomohiro Okuma

. A formula for the geometric genus of surface singularities. Tomohiro Okuma A formula for the geometric genus of surface singularities Yamagata University Branched Coverings, Degenerations, and Related Topics 2011 TMU, March 7 10, 2011 Contents Some known results When is p g topological?

More information

The Goodwillie-Weiss Tower and Knot Theory - Past and Present

The Goodwillie-Weiss Tower and Knot Theory - Past and Present The Goodwillie-Weiss Tower and Knot Theory - Past and Present Dev P. Sinha University of Oregon June 24, 2014 Goodwillie Conference, Dubrovnik, Croatia New work joint with Budney, Conant and Koytcheff

More information

Multiplicity of singularities is not a bi-lipschitz invariant

Multiplicity of singularities is not a bi-lipschitz invariant Multiplicity of singularities is not a bi-lipschitz invariant Misha Verbitsky Joint work with L. Birbrair, A. Fernandes, J. E. Sampaio Geometry and Dynamics Seminar Tel-Aviv University, 12.12.2018 1 Zariski

More information

Symplectic 4-manifolds, singular plane curves, and isotopy problems

Symplectic 4-manifolds, singular plane curves, and isotopy problems Symplectic 4-manifolds, singular plane curves, and isotopy problems Denis AUROUX Massachusetts Inst. of Technology and Ecole Polytechnique Symplectic manifolds A symplectic structure on a smooth manifold

More information

FIU Winter Conference on Geometry, Topology and Applications. Titles and Abstracts

FIU Winter Conference on Geometry, Topology and Applications. Titles and Abstracts FIU Winter Conference on Geometry, Topology and Applications January 4-7, 2017 Titles and Abstracts Henry Adams, Colorado State University Title 1: An introduction to applied and computational topology

More information

ON THE CONTACT STRUCTURE OF A CLASS OF REAL ANALYTIC GERMS OF THE FORM fḡ

ON THE CONTACT STRUCTURE OF A CLASS OF REAL ANALYTIC GERMS OF THE FORM fḡ To Professor Mutsuo Oka on the occasion of his 60th birthday ON THE CONTACT STRUCTURE OF A CLASS OF REAL ANALYTIC GERMS OF THE FORM fḡ MASAHARU ISHIKAWA Abstract. It is known that the argument map fḡ/

More information

How Teissier mixed multiplicities

How Teissier mixed multiplicities Université de Lille 1, France Conference Singular Landscapes Aussois, France The 22-nd of June 2015 Bernard Teissier s wisdom Better a house without roof than a house without view. Hunza saying (starting

More information

Monodromy and spectrum of quasi-ordinary surface singularities. Mirel Caibar, Gary Kennedy, Lee McEwan

Monodromy and spectrum of quasi-ordinary surface singularities. Mirel Caibar, Gary Kennedy, Lee McEwan Monodromy and spectrum of quasi-ordinary surface singularities 2009 An irreducible germ of algebraic surface is quasi-ordinary if one can find a finite map to a nonsingular surface germ, whose discriminant

More information

The geometry of Landau-Ginzburg models

The geometry of Landau-Ginzburg models Motivation Toric degeneration Hodge theory CY3s The Geometry of Landau-Ginzburg Models January 19, 2016 Motivation Toric degeneration Hodge theory CY3s Plan of talk 1. Landau-Ginzburg models and mirror

More information

Celebrating One Hundred Fifty Years of. Topology. ARBEITSTAGUNG Bonn, May 22, 2013

Celebrating One Hundred Fifty Years of. Topology. ARBEITSTAGUNG Bonn, May 22, 2013 Celebrating One Hundred Fifty Years of Topology John Milnor Institute for Mathematical Sciences Stony Brook University (www.math.sunysb.edu) ARBEITSTAGUNG Bonn, May 22, 2013 Algebra & Number Theory 3 4

More information

PRINCIPLES OF PHYSICS. \Hp. Ni Jun TSINGHUA. Physics. From Quantum Field Theory. to Classical Mechanics. World Scientific. Vol.2. Report and Review in

PRINCIPLES OF PHYSICS. \Hp. Ni Jun TSINGHUA. Physics. From Quantum Field Theory. to Classical Mechanics. World Scientific. Vol.2. Report and Review in LONDON BEIJING HONG TSINGHUA Report and Review in Physics Vol2 PRINCIPLES OF PHYSICS From Quantum Field Theory to Classical Mechanics Ni Jun Tsinghua University, China NEW JERSEY \Hp SINGAPORE World Scientific

More information

OKA S CONJECTURE ON IRREDUCIBLE PLANE SEXTICS. II. Alex Degtyarev

OKA S CONJECTURE ON IRREDUCIBLE PLANE SEXTICS. II. Alex Degtyarev OKA S CONJECTURE ON IRREDUCIBLE PLANE SEXTICS. II Alex Degtyarev Abstract. We complete the proof of Oka s conjecture on the Alexander polynomial of an irreducible plane sextic. We also calculate the fundamental

More information

GENERIC TORELLI THEOREM FOR QUINTIC-MIRROR FAMILY. Sampei Usui

GENERIC TORELLI THEOREM FOR QUINTIC-MIRROR FAMILY. Sampei Usui GENERIC TORELLI THEOREM FOR QUINTIC-MIRROR FAMILY Sampei Usui Abstract. This article is a geometric application of polarized logarithmic Hodge theory of Kazuya Kato and Sampei Usui. We prove generic Torelli

More information

QGM Retreat 2011 the Sandbjerg Estate October Programme

QGM Retreat 2011 the Sandbjerg Estate October Programme Monday 10 October 15:30 Departure from QGM. We meet in the parking lot in front of bldg. 1530 17:45 Arrival at Sandbjerg 18:00 Dinner - (each evening at the same time) Tuesday 11 October 08:00-09:00 Breakfast

More information

Preprint Preprint Preprint Preprint

Preprint Preprint Preprint Preprint CADERNOS DE MATEMÁTICA 14, 41 54 May (2013) ARTIGO NÚMERO SMA#378 The Euler Obstruction and Torus Action Thaís M Dalbelo Instituto de Ciências Matemáticas e de Computação Universidade de São Paulo, Av

More information

Notes on non-isolated singularities

Notes on non-isolated singularities Notes on non-isolated singularities by Lê Dũng Tráng Contents 1 Critical points of polynomials 3 1.1 Polynomial functions.................................... 3 1.2 Restriction to non-singular differences..........................

More information

Trends in Modern Geometry

Trends in Modern Geometry Trends in Modern Geometry July 7th (Mon) 11st (Fri), 2014 Lecture Hall, Graduate School of Mathematical Sciences, the University of Tokyo July 7th (Monday) 14:00 15:00 Xiuxiong Chen (Stony Brook) On the

More information

arxiv:math/ v1 [math.ag] 7 Apr 2005

arxiv:math/ v1 [math.ag] 7 Apr 2005 REGULAR FUNCTIONS TRANSVERSAL AT INFINITY arxiv:math/0504128v1 [math.ag] 7 Apr 2005 ALEXANDRU DIMCA AND ANATOLY LIBGOBER Abstract. We generalize and complete some of Maxim s recent results on Alexander

More information

A NOTE ON E 8 -INTERSECTION FORMS AND CORRECTION TERMS

A NOTE ON E 8 -INTERSECTION FORMS AND CORRECTION TERMS A NOTE ON E 8 -INTERSECTION FORMS AND CORRECTION TERMS MOTOO TANGE Abstract. In this paper we construct families of homology spheres which bound 4-manifolds with intersection forms isomorphic to E 8. We

More information

Knot Contact Homology, Chern-Simons Theory, and Topological Strings

Knot Contact Homology, Chern-Simons Theory, and Topological Strings Knot Contact Homology, Chern-Simons Theory, and Topological Strings Tobias Ekholm Uppsala University and Institute Mittag-Leffler, Sweden Symplectic Topology, Oxford, Fri Oct 3, 2014 Plan Reports on joint

More information

COMPLEX VARIABLES. Principles and Problem Sessions YJ? A K KAPOOR. University of Hyderabad, India. World Scientific NEW JERSEY LONDON

COMPLEX VARIABLES. Principles and Problem Sessions YJ? A K KAPOOR. University of Hyderabad, India. World Scientific NEW JERSEY LONDON COMPLEX VARIABLES Principles and Problem Sessions A K KAPOOR University of Hyderabad, India NEW JERSEY LONDON YJ? World Scientific SINGAPORE BEIJING SHANGHAI HONG KONG TAIPEI CHENNAI CONTENTS Preface vii

More information

Hodge-theoretic Atiyah-Meyer formulae and the stratified multiplicative property

Hodge-theoretic Atiyah-Meyer formulae and the stratified multiplicative property Contemporary Mathematics Hodge-theoretic Atiyah-Meyer formulae and the stratified multiplicative property Laurentiu Maxim and Jörg Schürmann Dedicated to Lê Dũng Tráng on His 60th Birthday Abstract. In

More information

The International Conference on Singularity Theory and Applications

The International Conference on Singularity Theory and Applications University of Science and Technology of China School of Mathematical Sciences, Hefei, Anhui, P.R.China 230026 The International Conference on Singularity Theory and Applications Conference Manual July

More information

Foliations 2012 Downloaded from by on 01/20/18. For personal use only. FOLIATIONS 2012

Foliations 2012 Downloaded from  by on 01/20/18. For personal use only. FOLIATIONS 2012 FOLIATIONS 2012 This page intentionally left blank FOLIATIONS 2012 Proceedings of the International Conference Łódź, Poland 25 30 June 2012 editors Paweł Walczak Uniwersytet Łódzki, Poland Jesús Álvarez

More information

A GEOMETRICAL APPROACH TO THE JACOBIAN CONJECTURE FOR n = 2

A GEOMETRICAL APPROACH TO THE JACOBIAN CONJECTURE FOR n = 2 LE DUNG TRANG AND C. WEBER KODAI MATH J. 17 (1994), 374 381 A GEOMETRICAL APPROACH TO THE JACOBIAN CONJECTURE FOR n = 2 BY LE DUNG TRANG AND CLAUDE WEBER Let us recall the Jacobian conjecture (see [B-C-W]

More information

LINKING INVARIANT FOR ALGEBRAIC PLANE CURVES

LINKING INVARIANT FOR ALGEBRAIC PLANE CURVES LINKING INVARIANT FOR ALGEBRAIC LANE CURVES BENOÎT GUERVILLE-BALLÉ Introduction The subject of our interest is the topology of algebraic plane curves (see [8, 12] for basic results). They are geometric

More information

Rigid Schubert classes in compact Hermitian symmetric spaces

Rigid Schubert classes in compact Hermitian symmetric spaces Rigid Schubert classes in compact Hermitian symmetric spaces Colleen Robles joint work with Dennis The Texas A&M University April 10, 2011 Part A: Question of Borel & Haefliger 1. Compact Hermitian symmetric

More information

Gauge Theory and Mirror Symmetry

Gauge Theory and Mirror Symmetry Gauge Theory and Mirror Symmetry Constantin Teleman UC Berkeley ICM 2014, Seoul C. Teleman (Berkeley) Gauge theory, Mirror symmetry ICM Seoul, 2014 1 / 14 Character space for SO(3) and Toda foliation Support

More information

Motivic Milnor fibers of a rational function

Motivic Milnor fibers of a rational function Noname manuscript No (will be inserted by the editor) Motivic Milnor fibers of a rational function Michel Raibaut Received: date / Accepted: date Abstract In this paper, following the approach of Denef-Loeser,

More information

Mirror Symmetry: Introduction to the B Model

Mirror Symmetry: Introduction to the B Model Mirror Symmetry: Introduction to the B Model Kyler Siegel February 23, 2014 1 Introduction Recall that mirror symmetry predicts the existence of pairs X, ˇX of Calabi-Yau manifolds whose Hodge diamonds

More information

Overview of classical mirror symmetry

Overview of classical mirror symmetry Overview of classical mirror symmetry David Cox (notes by Paul Hacking) 9/8/09 () Physics (2) Quintic 3-fold (3) Math String theory is a N = 2 superconformal field theory (SCFT) which models elementary

More information

Publication. * are expository articles.

Publication. * are expository articles. Publication * are expository articles. [1] A finiteness theorem for negatively curved manifolds, J. Differential Geom. 20 (1984) 497-521. [2] Theory of Convergence for Riemannian orbifolds, Japanese J.

More information

Mordell-Weil ranks of Jacobians of isotrivial families of plane curves

Mordell-Weil ranks of Jacobians of isotrivial families of plane curves Mordell-Weil ranks of Jacobians of isotrivial families of plane curves Remke Kloosterman Humboldt-Universität zu Berlin October 23, 2015 Introduction Theorem (Hulek K., 2008) Let n be a positive integer.

More information

Lectures on Quantum Groups

Lectures on Quantum Groups Lectures in Mathematical Physics Lectures on Quantum Groups Pavel Etingof and Olivier Schiffinann Second Edition International Press * s. c *''.. \ir.ik,!.'..... Contents Introduction ix 1 Poisson algebras

More information

Seiberg Witten invariants and surface singularities: splicings and cyclic covers

Seiberg Witten invariants and surface singularities: splicings and cyclic covers Sel math, New ser (2005), 399 45 c 2006 Birkhäuser Verlag Basel/Switzerland 022-824/040399-53 DOI 0007/s00029-006-006-2 Selecta Mathematica New Series Seiberg Witten invariants and surface singularities:

More information

To Reiko MIYAOKA and Keizo YAMAGUCHI. Shyuichi IZUMIYA. Department of Mathematics, Hokkaido University (SAPPORO, JAPAN) February 6, 2011

To Reiko MIYAOKA and Keizo YAMAGUCHI. Shyuichi IZUMIYA. Department of Mathematics, Hokkaido University (SAPPORO, JAPAN) February 6, 2011 The lightlike geometry of spacelike submanifolds in Minkowski space joint work with Maria del Carmen ROMERO FUSTER (Valencia, Spain) and Maria Aparecida SOARES RUAS (São Carlos, Brazil) To Reiko MIYAOKA

More information

2 PAOLO ALUFFI Now assume that X is embedded as a closed subvariety of a nonsingular variety M, byix!m. We are interested in the image i Λ csm(x) ofth

2 PAOLO ALUFFI Now assume that X is embedded as a closed subvariety of a nonsingular variety M, byix!m. We are interested in the image i Λ csm(x) ofth DIFFERENTIAL FORMS WITH LOGARITHMIC POLES AND CHERN-SCHWARTZ-MACPHERSON CLASSES OF SINGULAR VARIETIES Paolo Aluffi April 999 Abstract. We express the Chern-Schwartz-MacPherson class of a possibly singular

More information

THE EXISTENCE PROBLEM

THE EXISTENCE PROBLEM THE EXISTENCE PROBLEM Contact Geometry in High Dimensions Emmanuel Giroux CNRS ENS Lyon AIM May 21, 2012 Contact forms A contact form on a manifold V is a non-vanishing 1-form α whose differential dα at

More information

LIPSCHITZ GEOMETRY OF COMPLEX SURFACES: ANALYTIC INVARIANTS AND EQUISINGULARITY.

LIPSCHITZ GEOMETRY OF COMPLEX SURFACES: ANALYTIC INVARIANTS AND EQUISINGULARITY. LIPSCHITZ GEOMETRY OF COMPLEX SURFACES: ANALYTIC INVARIANTS AND EQUISINGULARITY. WALTER D NEUMANN AND ANNE PICHON Abstract. We prove that the outer Lipschitz geometry of a germ (X, 0) of a normal complex

More information

Introduction to D-module Theory. Algorithms for Computing Bernstein-Sato Polynomials. Jorge Martín-Morales

Introduction to D-module Theory. Algorithms for Computing Bernstein-Sato Polynomials. Jorge Martín-Morales Introduction to D-module Theory. Algorithms for Computing Bernstein-Sato Polynomials Jorge Martín-Morales Centro Universitario de la Defensa de Zaragoza Academia General Militar Differential Algebra and

More information

Analogs of Hodge Riemann relations

Analogs of Hodge Riemann relations Analogs of Hodge Riemann relations in algebraic geometry, convex geometry and linear algebra V. Timorin State University of New York at Stony Brook March 28, 2006 Hodge Riemann form Let X be a compact

More information

Chern numbers and Hilbert Modular Varieties

Chern numbers and Hilbert Modular Varieties Chern numbers and Hilbert Modular Varieties Dylan Attwell-Duval Department of Mathematics and Statistics McGill University Montreal, Quebec attwellduval@math.mcgill.ca April 9, 2011 A Topological Point

More information

Local topological algebraicity of analytic function germs

Local topological algebraicity of analytic function germs Local topological algebraicity of analytic function germs joint work with Marcin Bilski and Guillaume Rond Adam Parusiński Université Nice Sophia Antipolis Singularities in geometry, topology, foliations,

More information

INTERNATIONAL CONFERENCE ON SINGULARITY THEORY AND DYNAMICAL SYSTEMS IN MEMORY OF JOHN MATHER TSIMFDECEMBER 11-15, 2017

INTERNATIONAL CONFERENCE ON SINGULARITY THEORY AND DYNAMICAL SYSTEMS IN MEMORY OF JOHN MATHER TSIMFDECEMBER 11-15, 2017 INTERNATIONAL CONFERENCE ON SINGULARITY THEORY AND DYNAMICAL SYSTEMS IN MEMORY OF JOHN MATHER TSIMFDECEMBER 11-15, 2017 TITLES AND ABSTRACTS Spearker:A.G.Aleksandrov (Russian Academy of Sciences) Title:

More information

EUCLIDEAN DISTANCE DEGREE OF THE MULTIVIEW VARIETY

EUCLIDEAN DISTANCE DEGREE OF THE MULTIVIEW VARIETY EUCLIDEAN DISTANCE DEGREE OF THE MULTIVIEW VARIETY LAURENTIU G. MAXIM, JOSE ISRAEL RODRIGUEZ, AND BOTONG WANG Abstract. The Euclidean distance degree of an algebraic variety is a well-studied topic in

More information

Contributors. Preface

Contributors. Preface Contents Contributors Preface v xv 1 Kähler Manifolds by E. Cattani 1 1.1 Complex Manifolds........................... 2 1.1.1 Definition and Examples.................... 2 1.1.2 Holomorphic Vector Bundles..................

More information

The Stable Types and Minimal Whitney Stratifications of Discriminants and Euler Obstruction.

The Stable Types and Minimal Whitney Stratifications of Discriminants and Euler Obstruction. The Stable Types and Minimal Whitney Stratifications of Discriminants and Euler Obstruction. Grazielle F. Barbosa Nivaldo G. Grulha Jr. Marcelo J. Saia Support: Fapesp August 4th, 2010. Página 1 de 33

More information

arxiv: v1 [math.ag] 18 Jan 2019

arxiv: v1 [math.ag] 18 Jan 2019 PFAFFIAN INTEGRALS AND INVARIANTS OF SINGULAR VARIETIES PAOLO ALUFFI AND MARK GORESKY Dedicated to Lê Dũng Tráng on the occasion of his 70th birthday ariv:1901.06312v1 [math.ag] 18 Jan 2019 1. Introduction

More information

BRAID MONODROMY AND TOPOLOGY OF PLANE CURVES ENRIQUE ARTAL BARTOLO

BRAID MONODROMY AND TOPOLOGY OF PLANE CURVES ENRIQUE ARTAL BARTOLO BRAID MONODROMY AND TOPOLOGY OF PLANE CURVES ENRIQUE ARTAL BARTOLO Groupes de Tresses, Invariants Quantiques et Géométrie des Variétés de Dimension 3 Luminy, June 6-10 2005 Contents Introduction 1 1. Preliminaries

More information

Betti numbers of abelian covers

Betti numbers of abelian covers Betti numbers of abelian covers Alex Suciu Northeastern University Geometry and Topology Seminar University of Wisconsin May 6, 2011 Alex Suciu (Northeastern University) Betti numbers of abelian covers

More information

The International Conference on Singularity Theory and Applications

The International Conference on Singularity Theory and Applications University of Science and Technology of China School of Mathematical Sciences, Hefei, Anhui, P.R.China 230026 The International Conference on Singularity Theory and Applications Conference Manual July

More information

Recursions and Colored Hilbert Schemes

Recursions and Colored Hilbert Schemes Recursions and Colored Hilbert Schemes Anna Brosowsky [Joint Work With: Nathaniel Gillman, Murray Pendergrass] [Mentor: Dr. Amin Gholampour] Cornell University 24 September 2016 WiMiN Smith College 1/26

More information

On implicit Lagrangian differential systems

On implicit Lagrangian differential systems ANNALES POLONICI MATHEMATICI LXXIV (2000) On implicit Lagrangian differential systems by S. Janeczko (Warszawa) Bogdan Ziemian in memoriam Abstract. Let (P, ω) be a symplectic manifold. We find an integrability

More information

RUSSELL S HYPERSURFACE FROM A GEOMETRIC POINT OF VIEW

RUSSELL S HYPERSURFACE FROM A GEOMETRIC POINT OF VIEW Hedén, I. Osaka J. Math. 53 (2016), 637 644 RUSSELL S HYPERSURFACE FROM A GEOMETRIC POINT OF VIEW ISAC HEDÉN (Received November 4, 2014, revised May 11, 2015) Abstract The famous Russell hypersurface is

More information

Accelerator Physics. Tip World Scientific NEW JERSEY LONDON SINGAPORE BEIJING SHANGHAI HONG KONG TAIPEI BANGALORE. Second Edition. S. Y.

Accelerator Physics. Tip World Scientific NEW JERSEY LONDON SINGAPORE BEIJING SHANGHAI HONG KONG TAIPEI BANGALORE. Second Edition. S. Y. Accelerator Physics Second Edition S. Y. Lee Department of Physics, Indiana University Tip World Scientific NEW JERSEY LONDON SINGAPORE BEIJING SHANGHAI HONG KONG TAIPEI BANGALORE Contents Preface Preface

More information

TOPOLOGY OF LINE ARRANGEMENTS. Alex Suciu. Northeastern University. Workshop on Configuration Spaces Il Palazzone di Cortona September 1, 2014

TOPOLOGY OF LINE ARRANGEMENTS. Alex Suciu. Northeastern University. Workshop on Configuration Spaces Il Palazzone di Cortona September 1, 2014 TOPOLOGY OF LINE ARRANGEMENTS Alex Suciu Northeastern University Workshop on Configuration Spaces Il Palazzone di Cortona September 1, 2014 ALEX SUCIU (NORTHEASTERN) TOPOLOGY OF LINE ARRANGEMENTS CORTONA,

More information

The 6th Kagoshima Algebra Analysis Geometry Seminar

The 6th Kagoshima Algebra Analysis Geometry Seminar The 6th Kagoshima Algebra Analysis Geometry Seminar February 14 (Monday) 17 (Thursday), 2011 Room 101, Faculty of Science, Kagoshima Universiry ORGANIZERS Shun-ichi Kimura (Hiroshima University): kimura@math.sci.hiroshima-u.ac.jp

More information

arxiv: v1 [math.gt] 2 Mar 2016

arxiv: v1 [math.gt] 2 Mar 2016 EULER OBSTRUCTION OF ESSENTIALLY ISOLATED DETERMINANTAL SINGULARITIES arxiv:1603.00548v1 [math.gt] 2 Mar 2016 NANCY CAROLINA CHACHAPOYAS SIESQUÉN Abstract. We study the Euler obstruction of essentially

More information

a double cover branched along the smooth quadratic line complex

a double cover branched along the smooth quadratic line complex QUADRATIC LINE COMPLEXES OLIVIER DEBARRE Abstract. In this talk, a quadratic line complex is the intersection, in its Plücker embedding, of the Grassmannian of lines in an 4-dimensional projective space

More information

The Differential Structure of an Orbifold

The Differential Structure of an Orbifold The Differential Structure of an Orbifold AMS Sectional Meeting 2015 University of Memphis Jordan Watts University of Colorado at Boulder October 18, 2015 Introduction Let G 1 G 0 be a Lie groupoid. Consider

More information

Collapsing Calabi-Yau Manifolds workshop Talk Schedule

Collapsing Calabi-Yau Manifolds workshop Talk Schedule Collapsing Calabi-Yau Manifolds workshop Talk Schedule Events for: Monday, August 31st - Friday, September 4th 10:00am Dave Morrison - SCGP 102 Monday, August 31st Title: The singular fibers in an SYZ

More information

Irr. Statistical Methods in Experimental Physics. 2nd Edition. Frederick James. World Scientific. CERN, Switzerland

Irr. Statistical Methods in Experimental Physics. 2nd Edition. Frederick James. World Scientific. CERN, Switzerland Frederick James CERN, Switzerland Statistical Methods in Experimental Physics 2nd Edition r i Irr 1- r ri Ibn World Scientific NEW JERSEY LONDON SINGAPORE BEIJING SHANGHAI HONG KONG TAIPEI CHENNAI CONTENTS

More information

The Structure of Compact Groups

The Structure of Compact Groups Karl H. Hofmann Sidney A. Morris The Structure of Compact Groups A Primer for the Student A Handbook for the Expert wde G Walter de Gruyter Berlin New York 1998 Chapter 1. Basic Topics and Examples 1 Definitions

More information

Homological Mirror Symmetry and VGIT

Homological Mirror Symmetry and VGIT Homological Mirror Symmetry and VGIT University of Vienna January 24, 2013 Attributions Based on joint work with M. Ballard (U. Wisconsin) and Ludmil Katzarkov (U. Miami and U. Vienna). Slides available

More information

arxiv:math/ v2 [math.ag] 25 Mar 2004

arxiv:math/ v2 [math.ag] 25 Mar 2004 arxiv:math/0402388v2 [math.ag] 25 Mar 2004 Radial index and Euler obstruction of a 1-form on a singular variety W. Ebeling and S. M. Gusein-Zade Abstract A notion of the radial index of an isolated singular

More information

FUNDAMENTAL GROUPS. Alex Suciu. Northeastern University. Joint work with Thomas Koberda (U. Virginia) arxiv:

FUNDAMENTAL GROUPS. Alex Suciu. Northeastern University. Joint work with Thomas Koberda (U. Virginia) arxiv: RESIDUAL FINITENESS PROPERTIES OF FUNDAMENTAL GROUPS Alex Suciu Northeastern University Joint work with Thomas Koberda (U. Virginia) arxiv:1604.02010 Number Theory and Algebraic Geometry Seminar Katholieke

More information

Generalized Tian-Todorov theorems

Generalized Tian-Todorov theorems Generalized Tian-Todorov theorems M.Kontsevich 1 The classical Tian-Todorov theorem Recall the classical Tian-Todorov theorem (see [4],[5]) about the smoothness of the moduli spaces of Calabi-Yau manifolds:

More information

CHARACTERISTIC CLASSES OF SINGULAR TORIC VARIETIES

CHARACTERISTIC CLASSES OF SINGULAR TORIC VARIETIES CHARACTERISTIC CLASSES OF SINGULAR TORIC VARIETIES LAURENȚIU MAXIM AND JÖRG SCHÜRMANN Research Announcement Abstract. We introduce a new approach for the computation of characteristic classes of singular

More information

arxiv: v2 [math.at] 17 Sep 2009

arxiv: v2 [math.at] 17 Sep 2009 ALGEBRAIC MONODROMY AND OBSTRUCTIONS TO FORMALITY arxiv:0901.0105v2 [math.at] 17 Sep 2009 STEFAN PAPADIMA 1 AND ALEXANDER I. SUCIU 2 Abstract. Given a fibration over the circle, we relate the eigenspace

More information

Mirror symmetry. Mark Gross. July 24, University of Cambridge

Mirror symmetry. Mark Gross. July 24, University of Cambridge University of Cambridge July 24, 2015 : A very brief and biased history. A search for examples of compact Calabi-Yau three-folds by Candelas, Lynker and Schimmrigk (1990) as crepant resolutions of hypersurfaces

More information

Patrick Iglesias-Zemmour

Patrick Iglesias-Zemmour Mathematical Surveys and Monographs Volume 185 Diffeology Patrick Iglesias-Zemmour American Mathematical Society Contents Preface xvii Chapter 1. Diffeology and Diffeological Spaces 1 Linguistic Preliminaries

More information

arxiv:math/ v1 [math.gt] 26 Sep 2005

arxiv:math/ v1 [math.gt] 26 Sep 2005 EXPLICIT HORIZONTAL OPEN BOOKS ON SOME PLUMBINGS arxiv:math/0509611v1 [math.gt] 26 Sep 2005 TOLGA ETGÜ AND BURAK OZBAGCI ABSTRACT. We describe explicit open books on arbitrary plumbings of oriented circle

More information