Blow-up solutions for critical Trudinger-Moser equations in R 2
|
|
- Antonia Foster
- 5 years ago
- Views:
Transcription
1 Blow-up solutions for critical Trudinger-Moser equations in R 2 Bernhard Ruf Università degli Studi di Milano
2 The classical Sobolev embeddings We have the following well-known Sobolev inequalities: let Ω R N bounded, and Set Then, for N > 2: S q := H0 1 (Ω) : Sobolev space 2 = 2N N 2 sup u q dx u 2 1 Ω (critical exponent) < +, q < 2 compact, attained < +, q = 2 non compact, not attained = +, q > 2
3 The borderline case N = 2 The Trudinger-Moser inequality: S. Pohozaev (1965), N. Trudinger (1967): u H0 1 (Ω) e u2 dx < + Sharpened by J. Moser (1971): T α := sup e αu2 dx u 2 1 Ω Ω < +, α < 4π compact, attained < +, α = 4π non compact, attained? = +, α > 4π
4 The result of L. Carleson S.-Y. Alice Chang For Ω = B R (0): T 4π is attained Surprising, if compared to Sobolev case! Proof: Assume not attained: then maximizing sequence {u n } concentrates determine lim e 4πu2 n = (1 + e) Ω : non-compactness level n Ω show (by explicit example) that sup e 4πu2 > (1 + e) Ω : u 2 1 Ω contradiction! Generalizations: Struwe (1988): Ω near B R (0) Flucher (1992): general bounded Ω R 2
5 Associated differential equation An extremal u for T α is a critical point of the functional e u2 on S α = {u H0 1 (Ω) ; u 2 2 = α} namely Ω D Sα [ ] e u2 = 0 Ω that is { u = λ u e u 2 in Ω u = 0 on Ω, λ = α Ω u2 e u2
6 Two related (but not equivalent) problems: (T α ) u = αu eu2 Ω u2 e u2 in Ω, u = 0 on Ω and (P λ ) u = λ u e u2 in Ω, u = 0 on Ω Solutions of (P λ ) correspond to critical points of the free energy J λ (u) = u 2 λ e u2 dx Ω Ω
7 Some existence results (T α ) has (positive) solution, by Carleson-Chang, Flucher Existence of solutions for: (P λ ) u = λue u2 in Ω, u = 0 on Ω Adimurthi (1990) : a positive solution u λ exists, for 0 < λ < λ 1. Result valid for more general nonlinearities: suppose that f (t) = h(t) e t2, h C(R), and set F (t) := 0 f (s)ds. Assume H1) 0 < F (s) 1 2f (s)s, s R \ {0} H2) lim sup s 0 2F (s) s 2 < λ 1 H3) lim inf s h(s)s > 2 d 2 h(t) e t2 0, d: radius of largest ball B d Ω
8 Theorem: (de Figueiredo-Miyagaki-R., 1995). Assume H1) - H3). Then the critical growth equation u = f (u), in Ω, u = 0 on Ω has a positive solution Proof: (similar to Brezis-Nirenberg result for u = λu + u 2 1 ) use mountain-pass theorem by Ambrosetti-Rabinowitz determine non-compactness level use H3) and Moser sequence to show that mountain-pass level stays below non-compactness level
9 This existence result is almost sharp: de Figueiredo-R. (1995): Let Ω = B 1 (0). There exists δ > 0 such that if lim sup h(s)s < δ s then (P λ ) has no positive solution. On the other hand: topology helps to get solutions (cf. Coron, 1984; Bahri-Coron, 1988): Struwe (2000): For large class of critical nonlinearities (which includes above) there exists positive solution on suitable non-contractible domains
10 Loss of compactness: Quantization for (PS)-sequences Recall Struwe s result for Brezis-Nirenberg functional: I λ (u) = 1 u 2 λ u u 2, Ω R N, N 3 Ω For a sequence λ n λ 0, and a (PS)-sequence {u n }, i.e. I λ n (u n ) 0 and I λn (u n ) c, one has Ω I λn (u n ) = I λ0 (u 0 ) + k S N + o(1), for some k 1 where u 0 a critical point of I λ0, and S N is a positive constant Ω
11 Bubbling in the Trudinger-Moser case (P λ ) Druet (2006): Suppose that {u λ } is sequence of solutions of (P λ ) with uniformly bounded energy, i.e. (P λ ) u λ = λ u λ e u2 λ in Ω, uλ = 0 on Ω with Jλ (u λ ) = then for some integer k 0 Ω u λ 2 λ Ω e u2 λ (D k ) J λ (u λ ) k 4π, as λ 0, that is: bubbling in k points. c,
12 Previous results on single point bubbling: k = 1 Adimurthi-Struwe (2000) Adimurthi-Druet (2004): in addition: The solution u λ has unique isolated maximum which blows up around x 0 (as λ 0), where x 0 is critical point of Robin s function. Let G(x, y) be Green s function of the problem x G(x, y) = 8πδ y (x), x Ω ; G(x, y) = 0, x Ω and H(x, y) its regular part: H(x, y) = 4 log H(ξ, ξ): Robin s function of Ω 1 G(x, y) x y
13 Existence of bubbling solutions Recall results for: Liouville equation in 2d : u = λe u in Ω, u = 0 on Ω Concentration as λ 0 or λ = µ Ω eu (also on compact manifolds and with singular weights) Brezis, Merle, Nagasaki, Suzuki, Li, Shafrir, Weston, Ma, Wei, Tarantello, Struwe, Nolasco, Baraket, Pacard, Del Pino, Kowalczyk, Musso, Esposito, Grossi, Pistoia, Bartolucci, Chen, Lin, Chang, Gursky, Yang, Malchiodi, Robert... Del Pino-Kowalczyk-Musso (2005): If Ω is not simply connected, then solutions with k bubbling points exist for each given k 1. Blowing-up takes place at critical points of ψ k (ξ) := k i=1 H(ξ j, ξ j ) i j G(ξ i, ξ j ).
14 Existence of solutions to (P λ ) with Property (D k )? Bubbling solutions: For k distinct points ξ 1,..., ξ k Ω and k positive numbers m 1,..., m k R consider the function ϕ k (ξ, m) = k 2mj 2 (b + log mj 2 ) + mj 2 H(ξ j, ξ j ) m i m j G(ξ i, ξ j ) i j j=1 where b = 2 log 8 2
15 Stable critical point situation (SCS) We say that ϕ k has a stable critical point situation, if for some open set Λ with Λ { (ξ, m) Ω k R k + ξ i ξ j if i j } there exists δ > 0 such that for any g C 1 (Λ) with g C 1 (Λ) < δ ϕ k + g has a critical point in Λ.
16 Important facts: ϕ 1 (ξ, m) satisfies (SCS), with Λ a neighborhood of its minimum set. ϕ 1 (ξ, m) = 2m 2 (b + log m 2 ) + m 2 H(ξ, ξ) ϕ 2 (ξ, m) satisfies (SCS) whenever Ω is not simply connected. 2 ϕ 2 (ξ, m) = 2mj 2 (b + log mj 2 ) + mj 2 H(ξ j, ξ j ) 2m 1 m 2 G(ξ 1, ξ 2 ). j=1 We believe that (SCS) holds for any k 2 (if Ω is not simply connected).
17 Theorem 1. (M. del Pino - M. Musso - R., JFA, 2009) Assume that ϕ k (ξ, m) has (SCS). Then there exist solutions u λ to (P λ ) which blow up around k points ξ j as λ 0, where ϕ k (ξ, m) 0 away from the points ξ j the solutions u λ take the form (1) u λ (x) = k λ m j [ G(x, ξ j ) + o(1) ] Furthermore j=1 J λ (u λ ) = 4πk + λ [ Ω + 8π ϕ k (ξ, m) + o(1) ]. This result applies for k = 1: there exists bubbling solution near minimizer of H(ξ, ξ) k = 2: there exists solution with two bubbles, provided that Ω is not simply connected.
18 Argument of the proof: construction of approximate solution, based on standard bubble linearize equation in this approximate solution finite dimensional variational reduction via Lyapunov-Schmidt yields finite-dimensional functional f k which is C 1 -close to ϕ k (ξ, m) critical points of f k yield the solution, and the information on the location of the bubbles This method has been successfully applied by numerous authors to problems in the critical growth range: Bahri, Coron, Yanyan Li, Rey, Ni, Wei, Takagi, del Pino, Felmer, Musso, Kowalczyk, Pistoia, Grossi, Esposito, Ge, Jing, Baraket, Pacard,...
19 Standard bubbles Let ξ j Ω, j = 1,..., k, with ξ j ξ k for j k. Fix an index j and define γ j and ε j by the relations γ 2 j := 1 4m 2 j λ, ε2 j := 2m 2 j e 1 4m j 2λ so that γ j and ε j 0, as λ 0. Let us write u(x) = γ j + 1 ( ) x ξj v. 2γ j Then u = λue u2 v = (1 + v 2γ 2 j ε j )e v 2 4γ j 2 e v
20 Limiting equation v = (1 + v 2γ 2 j )e v 2 4γ j 2 e v For γ j + we get the limiting Liouville equation (2) v = e v, in R 2 The radial solutions of (2) are given by : ω µ ( y ) = log 8µ 2 (µ 2 + y 2, µ > 0 : standard bubble ) 2
21 Approximate solution Let ξ 1,..., ξ k Ω, m 1,..., m k > 0 be given. We build an approximate solution U λ (ξ, m). First approximation: Want that first approximation U λ is such that for some µ j > 0, and for x close to ξ j [ U λ (x) γ j + 1 ( x ξj ) ] ω µj =: W j (x) 2γ j ε j Add to W j a harmonic function such that boundary condition zero is satisfied: that is U j (x) = W j (x) λ m j [log 2m 2 j + log 8µ 2 j + H j (x)], H j = 0 in Ω, H j (x) = log 1 (ε 2 j µ2 j + x ξ j 2 ) 2 on Ω ;
22 Define U λ (ξ, m) := k j=1 U j Choose the µ j s such that U λ (x) W j (x) for x close to ξ j, for all j U λ are approximate solutions, with error R λ (x) = U λ + λu λ e U2 λ Introduce suitable L -weighted norm so that R λ Cλ Goal: find solution u of the form u = U λ + φ such that φ is small for suitable points ξ i and m i
23 Linearization in U λ : denote f (s) = se s2 φ + f (U λ )φ = R [f (U λ + φ) f (U λ ) f (U λ )φ] =: R N(φ) If L λ := + f (U λ ) were boundedly invertible: invert L λ, use contraction principle: done! Note: far from the points ξ j : f (U λ ) = O(λ), hence L λ = + f (U λ ) = + O(λ) is small perturbation of away from the concentration points near the points ξ j : f (U λ ) 1 e ω ε 2 j. j Hence L λ is approximately superposition of the linear operators L j (φ) = φ + 1 ε 2 j e ω j φ
24 Kernel of L Thus: L λ is nontrivial perturbation of near the ξ j, while essentially equal to on most of the domain. Note: L j (φ) = φ + 1 ε 2 j e ω j φ = 0 has bounded solutions, due to natural invariances of (3) ω + e ω = 0 Let ω µ (y) : explicit solution of (3), then z 0j (x) = µ ω µj (y), z 1j = x1 ω µj (x), z 2j = x2 ω µj (x), j = 1,..., k satisfy Z + e ωµ j Z = 0
25 Projection onto kernel of L Hence: Z ij (x) := z ij ( x ξj ε j ), i = 0, 1, 2 are bounded solutions of L j (Z) = 0 on R 2 ; in fact, they are all bounded solutions (Bakaret-Pacard, 1998) Consider projected version of equation L λ φ = R N(φ), i.e. projection onto the almost kernel given by above functions, multiplied by cut-off functions ζ j 2 k L λ (φ) = R N(φ) + c ij Z ij ζ j, in Ω (4) i=0 j=1 φ = 0, on Ω Ω Z ijζ j φ = 0, for all i, j Then: (4) has unique solution φ(ξ, m), with φ Cλ.
26 Final step: Find ( ξ, m) such that (5) c ij ( ξ, m) = 0, for all i = 0, 1, 2; j = 1,, k Put problem in variational form: ( ( (6) (ξ, m) J λ λ Uλ (ξ, m) + φ(ξ, m) )) =: T λ (ξ, m) Fact: if ( ξ, m) is critical point of (6), then (5) holds Energy computation at first approximation: T λ (ξ, m) = 4πk λ Ω + λ 8π ϕ k (ξ, m) + O(λ 2 ), where ϕ k is the functional in statement of Theorem 1. By the (SCS) property: T λ has a critical point.
27 Back to the Moser functional ( i.e. the case (T α ) ) Recall: J α (u) := Ω with associated equation e u2 dx on S α = {u H 1 0 (Ω) : u 2 2 = α} sup J α (u) attained, if α 4π u S α (T α ) u = α u eu2 Ω u2 e u2 in Ω, u = 0 on Ω
28 Existence of critical points in the Supercritical Trudinger-Moser case Numerical evidence (Monahan, 1971): For Ω = B 1 (0) R 2, the Trudinger-Moser functional (7) J α (u) = e u2 dx, u 2 2 = α admits local maximum and second critical value in the Ω supercritical regime, i.e. for α > 4π (and near 4π) Struwe (1988): the global maximum of J α can be continued as a local maximum for values 4π < α < α 1 and there exists a second solution u α to (T α ), defined for α in a dense subset of (4π, α 1 ).
29 u(p) u(α) 1 2 p 4π α Approaching criticality in the Sobolev and the Moser case
30 Lamm, Robert, Struwe (2009) A second solution u α of (T α ) is defined on the entire interval (4π, α 1 ). Proof: Asymptotic analysis of a geometric heat flow associated to the Trudinger Moser functional and a min-max argument. Little qualitative information on the second solution The mentioned numerical evidence (in the case of a ball) suggests existence of a branch of solutions of (T α ) that blows up as α 4π.
31 Theorem 2. (M. del Pino, M. Musso, R.) There is a positive solution u α for (T α ) for 4π < α < α 1 such that u α blows-up around a point ξ α, and away from ξ α : u α (x) = (α 4π) 1 4 G(x, ξα ) + o(1). Besides H(ξ α, ξ α ) min H(ξ, ξ). ξ
32 Theorem 3. (M. del Pino, M. Musso, R.) Assume that Ω is not simply connected. Then there is a positive solution u α to (T α ) for 8π < α < α 2 which blows up around two points ξ 1, ξ 2 Ω, and away from them: u α (x) = a (α 8π) 1 4 [ m1 G(x, ξ 1 ) + m 2 G(x, ξ 1 ) ] + o(1). where ϕ 2 (ξ, m) 0 as α 8π, with 2 ϕ 2 (ξ, m) = 2(b + mj 2 ) log mj 2 + mj 2 H(ξ j, ξ j ) 2m 1 m 2 G(ξ 1, ξ 2 ) j=1 b = 2 log 8 2.
33 We believe: If Ω is not simply connected and k 4π < α < α k (Ω), then there is a positive solution u α of u + α u eu2 Ω u2 e u2 = 0 in Ω, u = 0 on Ω with k blow-up points ξ j. Away from them: where with ϕ k (ξ, m) = u α (x) = a (α 4kπ) 1 4 ϕ k (ξ, m) 0 k m j G(x, ξ j ) + o(1) j=1 as α 8π k 2mj 2 (b + log mj 2 ) + mj 2 H(ξ j, ξ j ) m i m j G(ξ j, ξ j ). i j j=1
34 This is true if Ω R 2 is an annulus: Theorem 4. (M. del Pino, M. Musso, R.) If Ω = {x R 2 : 0 < a < x < b}, then for 4π k < α < α k there exists positive solution u α to (T α ) - invariant under rotations by angle 2π k - blows up around k points (lying on vertices of regular polygon), as α 4πk
35 Proofs of Theorems 2-4: Idea similar to proof of Theorem 1, however different in technical details and estimates
Stationary Kirchhoff equations with powers by Emmanuel Hebey (Université de Cergy-Pontoise)
Stationary Kirchhoff equations with powers by Emmanuel Hebey (Université de Cergy-Pontoise) Lectures at the Riemann center at Varese, at the SNS Pise, at Paris 13 and at the university of Nice. June 2017
More informationASYMPTOTIC BEHAVIOR OF A FOURTH ORDER MEAN FIELD EQUATION WITH DIRICHLET BOUNDARY CONDITION
ASYMPTOTIC BEHAVIOR OF A FOURTH ORDER MEAN FIELD EQUATION WITH DIRICHLET BOUNDARY CONDITION FRÉDÉRIC ROBERT AND JUNCHENG WEI Abstract. We consider asymptotic behavior of the following fourth order equation
More informationLane-Emden problems: symmetries of low energy solutions
Lane-Emden roblems: symmetries of low energy solutions Ch. Grumiau Institut de Mathématique Université de Mons Mons, Belgium June 2012 Flagstaff, Arizona (USA) Joint work with M. Grossi and F. Pacella
More informationarxiv: v1 [math.ap] 4 Nov 2013
BLOWUP SOLUTIONS OF ELLIPTIC SYSTEMS IN TWO DIMENSIONAL SPACES arxiv:1311.0694v1 [math.ap] 4 Nov 013 LEI ZHANG Systems of elliptic equations defined in two dimensional spaces with exponential nonlinearity
More informationPerturbations of singular solutions to Gelfand s problem p.1
Perturbations of singular solutions to Gelfand s problem Juan Dávila (Universidad de Chile) In celebration of the 60th birthday of Ireneo Peral February 2007 collaboration with Louis Dupaigne (Université
More informationNONLINEAR SCHRÖDINGER ELLIPTIC SYSTEMS INVOLVING EXPONENTIAL CRITICAL GROWTH IN R Introduction
Electronic Journal of Differential Equations, Vol. 014 (014), No. 59, pp. 1 1. ISSN: 107-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu NONLINEAR SCHRÖDINGER
More informationElliptic equations with one-sided critical growth
Electronic Journal of Differential Equations, Vol. 00(00), No. 89, pp. 1 1. ISSN: 107-6691. URL: http://ejde.math.swt.edu or http://ejde.math.unt.edu ftp ejde.math.swt.edu (login: ftp) Elliptic equations
More informationNonlinear elliptic systems with exponential nonlinearities
22-Fez conference on Partial Differential Equations, Electronic Journal of Differential Equations, Conference 9, 22, pp 139 147. http://ejde.math.swt.edu or http://ejde.math.unt.edu ftp ejde.math.swt.edu
More informationSYMMETRY RESULTS FOR PERTURBED PROBLEMS AND RELATED QUESTIONS. Massimo Grosi Filomena Pacella S. L. Yadava. 1. Introduction
Topological Methods in Nonlinear Analysis Journal of the Juliusz Schauder Center Volume 21, 2003, 211 226 SYMMETRY RESULTS FOR PERTURBED PROBLEMS AND RELATED QUESTIONS Massimo Grosi Filomena Pacella S.
More informationWeighted Trudinger-Moser inequalities and associated Liouville type equations
Weighted Trudinger-Moser inequalities and associated Liouville type equations Marta Calanchi, Eugenio Massa and ernhard Ruf Abstract We discuss some Trudinger Moser inequalities with weighted Sobolev norms.
More informationOn Nonuniformly Subelliptic Equations of Q sub-laplacian Type with Critical Growth in the Heisenberg Group
Advanced Nonlinear Studies 12 212), 659 681 On Nonuniformly Subelliptic Equations of sub-laplacian Type with Critical Growth in the Heisenberg Group Nguyen Lam, Guozhen Lu Department of Mathematics Wayne
More informationVANISHING-CONCENTRATION-COMPACTNESS ALTERNATIVE FOR THE TRUDINGER-MOSER INEQUALITY IN R N
VAISHIG-COCETRATIO-COMPACTESS ALTERATIVE FOR THE TRUDIGER-MOSER IEQUALITY I R Abstract. Let 2, a > 0 0 < b. Our aim is to clarify the influence of the constraint S a,b = { u W 1, (R ) u a + u b = 1 } on
More informationSolutions with prescribed mass for nonlinear Schrödinger equations
Solutions with prescribed mass for nonlinear Schrödinger equations Dario Pierotti Dipartimento di Matematica, Politecnico di Milano (ITALY) Varese - September 17, 2015 Work in progress with Gianmaria Verzini
More informationElliptic stability for stationary Schrödinger equations by Emmanuel Hebey. Part III/VI A priori blow-up theories March 2015
Elliptic stability for stationary Schrödinger equations by Emmanuel Hebey Part III/VI A priori blow-up theories March 2015 Nonlinear analysis arising from geometry and physics Conference in honor of Professor
More informationChanging sign solutions for the CR-Yamabe equation
Changing sign solutions for the CR-Yamabe equation Ali Maalaoui (1) & Vittorio Martino (2) Abstract In this paper we prove that the CR-Yamabe equation on the Heisenberg group has infinitely many changing
More informationBooklet of Abstracts Brescia Trento Nonlinear Days Second Edition 25th May 2018
Booklet of Abstracts Brescia Trento Nonlinear Days Second Edition 25th May 2018 2 Recent updates on double phase variational integrals Paolo Baroni, Università di Parma Abstract: I will describe some recent
More informationA Variational Analysis of a Gauged Nonlinear Schrödinger Equation
A Variational Analysis of a Gauged Nonlinear Schrödinger Equation Alessio Pomponio, joint work with David Ruiz Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari Variational and Topological
More informationSYMMETRY OF POSITIVE SOLUTIONS OF SOME NONLINEAR EQUATIONS. M. Grossi S. Kesavan F. Pacella M. Ramaswamy. 1. Introduction
Topological Methods in Nonlinear Analysis Journal of the Juliusz Schauder Center Volume 12, 1998, 47 59 SYMMETRY OF POSITIVE SOLUTIONS OF SOME NONLINEAR EQUATIONS M. Grossi S. Kesavan F. Pacella M. Ramaswamy
More informationFifth Abel Conference : Celebrating the Mathematical Impact of John F. Nash Jr. and Louis Nirenberg
Fifth Abel Conference : Celebrating the Mathematical Impact of John F. Nash Jr. and Louis Nirenberg Some analytic aspects of second order conformally invariant equations Yanyan Li Rutgers University November
More informationRecent developments on the global behavior to critical nonlinear dispersive equations. Carlos E. Kenig
Recent developments on the global behavior to critical nonlinear dispersive equations Carlos E. Kenig In the last 25 years or so, there has been considerable interest in the study of non-linear partial
More informationCOMBINED EFFECTS FOR A STATIONARY PROBLEM WITH INDEFINITE NONLINEARITIES AND LACK OF COMPACTNESS
Dynamic Systems and Applications 22 (203) 37-384 COMBINED EFFECTS FOR A STATIONARY PROBLEM WITH INDEFINITE NONLINEARITIES AND LACK OF COMPACTNESS VICENŢIU D. RĂDULESCU Simion Stoilow Mathematics Institute
More informationJournal of Differential Equations
J. Differential Equations 252 202) 45 437 Contents lists available at SciVerse ScienceDirect Journal of Differential Equations www.elsevier.com/locate/jde Sharp existence results for mean field equations
More informationMinimization problems on the Hardy-Sobolev inequality
manuscript No. (will be inserted by the editor) Minimization problems on the Hardy-Sobolev inequality Masato Hashizume Received: date / Accepted: date Abstract We study minimization problems on Hardy-Sobolev
More informationOn Chern-Simons-Schrödinger equations including a vortex point
On Chern-Simons-Schrödinger equations including a vortex point Alessio Pomponio Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari Workshop in Nonlinear PDEs Brussels, September 7
More informationA REMARK ON LEAST ENERGY SOLUTIONS IN R N. 0. Introduction In this note we study the following nonlinear scalar field equations in R N :
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY Volume 131, Number 8, Pages 399 408 S 000-9939(0)0681-1 Article electronically published on November 13, 00 A REMARK ON LEAST ENERGY SOLUTIONS IN R N LOUIS
More informationPolyharmonic Elliptic Problem on Eistein Manifold Involving GJMS Operator
Journal of Applied Mathematics and Computation (JAMC), 2018, 2(11), 513-524 http://www.hillpublisher.org/journal/jamc ISSN Online:2576-0645 ISSN Print:2576-0653 Existence and Multiplicity of Solutions
More informationTHE HARDY-SCHRÖDINGER OPERATOR WITH INTERIOR SINGULARITY: THE REMAINING CASES
THE HARDY-SCHRÖDINGER OPERATOR WITH INTERIOR SINGULARITY: THE REMAINING CASES NASSIF GHOUSSOUB AND FRÉDÉRIC ROBERT Abstract. We consider the remaining unsettled cases in the problem of existence of energy
More informationNONHOMOGENEOUS ELLIPTIC EQUATIONS INVOLVING CRITICAL SOBOLEV EXPONENT AND WEIGHT
Electronic Journal of Differential Equations, Vol. 016 (016), No. 08, pp. 1 1. ISSN: 107-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu NONHOMOGENEOUS ELLIPTIC
More informationExistence, stability and instability for Einstein-scalar field Lichnerowicz equations by Emmanuel Hebey
Existence, stability and instability for Einstein-scalar field Lichnerowicz equations by Emmanuel Hebey Joint works with Olivier Druet and with Frank Pacard and Dan Pollack Two hours lectures IAS, October
More informationBlow-up Analysis of a Fractional Liouville Equation in dimension 1. Francesca Da Lio
Blow-up Analysis of a Fractional Liouville Equation in dimension 1 Francesca Da Lio Outline Liouville Equation: Local Case Geometric Motivation Brezis & Merle Result Nonlocal Framework The Half-Laplacian
More informationINFINITELY MANY POSITIVE SOLUTIONS OF NONLINEAR SCHRÖDINGER EQUATIONS WITH NON-SYMMETRIC POTENTIALS
INFINITELY MANY POSITIVE SOLUTIONS OF NONLINEAR SCHRÖDINGER EQUATIONS WITH NON-SYMMETRIC POTENTIALS MANUEL DEL PINO, JUNCHENG WEI, AND WEI YAO Abstract. We consider the standing-wave problem for a nonlinear
More informationEXISTENCE OF SOLUTIONS FOR CROSS CRITICAL EXPONENTIAL N-LAPLACIAN SYSTEMS
Electronic Journal of Differential Equations, Vol. 2014 (2014), o. 28, pp. 1 10. ISS: 1072-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu EXISTECE OF SOLUTIOS
More informationThe effects of a discontinues weight for a problem with a critical nonlinearity
arxiv:1405.7734v1 [math.ap] 9 May 014 The effects of a discontinues weight for a problem with a critical nonlinearity Rejeb Hadiji and Habib Yazidi Abstract { We study the minimizing problem px) u dx,
More informationNon-radial solutions to a bi-harmonic equation with negative exponent
Non-radial solutions to a bi-harmonic equation with negative exponent Ali Hyder Department of Mathematics, University of British Columbia, Vancouver BC V6TZ2, Canada ali.hyder@math.ubc.ca Juncheng Wei
More informationElliptic Kirchhoff equations
Elliptic Kirchhoff equations David ARCOYA Universidad de Granada Sevilla, 8-IX-2015 Workshop on Recent Advances in PDEs: Analysis, Numerics and Control In honor of Enrique Fernández-Cara for his 60th birthday
More informationSome lecture notes for Math 6050E: PDEs, Fall 2016
Some lecture notes for Math 65E: PDEs, Fall 216 Tianling Jin December 1, 216 1 Variational methods We discuss an example of the use of variational methods in obtaining existence of solutions. Theorem 1.1.
More informationVARIATIONAL ASPECTS OF LIOUVILLE
SCUOLA INTERNAZIONALE SUPERIORE DI STUDI AVANZATI Area of Mathematics VARIATIONAL ASPECTS OF LIOUVILLE EQUATIONS AND SYSTEMS Ph.D. Thesis Supervisor: Prof. Andrea Malchiodi Candidate: Aleks Jevnikar Academic
More informationLocal mountain-pass for a class of elliptic problems in R N involving critical growth
Nonlinear Analysis 46 (2001) 495 510 www.elsevier.com/locate/na Local mountain-pass for a class of elliptic problems in involving critical growth C.O. Alves a,joão Marcos do O b; ;1, M.A.S. Souto a;1 a
More informationSingularly perturbed elliptic problems with superlinear or asymptotically linear nonlinearities
Singularly perturbed elliptic problems with superlinear or asymptotically linear nonlinearities Louis Jeanjean and Kazunaga Tanaka Equipe de Mathématiques (UMR CNRS 6623) Université de Franche-Comté 16
More informationDynamics of energy-critical wave equation
Dynamics of energy-critical wave equation Carlos Kenig Thomas Duyckaerts Franke Merle September 21th, 2014 Duyckaerts Kenig Merle Critical wave 2014 1 / 22 Plan 1 Introduction Duyckaerts Kenig Merle Critical
More informationNote on the Chen-Lin Result with the Li-Zhang Method
J. Math. Sci. Univ. Tokyo 18 (2011), 429 439. Note on the Chen-Lin Result with the Li-Zhang Method By Samy Skander Bahoura Abstract. We give a new proof of the Chen-Lin result with the method of moving
More informationDEGREE AND SOBOLEV SPACES. Haïm Brezis Yanyan Li Petru Mironescu Louis Nirenberg. Introduction
Topological Methods in Nonlinear Analysis Journal of the Juliusz Schauder Center Volume 13, 1999, 181 190 DEGREE AND SOBOLEV SPACES Haïm Brezis Yanyan Li Petru Mironescu Louis Nirenberg Dedicated to Jürgen
More informationSharp energy estimates and 1D symmetry for nonlinear equations involving fractional Laplacians
Sharp energy estimates and 1D symmetry for nonlinear equations involving fractional Laplacians Eleonora Cinti Università degli Studi di Bologna - Universitat Politécnica de Catalunya (joint work with Xavier
More informationA non-local critical problem involving the fractional Laplacian operator
Eduardo Colorado p. 1/23 A non-local critical problem involving the fractional Laplacian operator Eduardo Colorado Universidad Carlos III de Madrid UGR, Granada Febrero 212 Eduardo Colorado p. 2/23 Eduardo
More informationIntegro-differential equations: Regularity theory and Pohozaev identities
Integro-differential equations: Regularity theory and Pohozaev identities Xavier Ros Oton Departament Matemàtica Aplicada I, Universitat Politècnica de Catalunya PhD Thesis Advisor: Xavier Cabré Xavier
More informationON NONHOMOGENEOUS BIHARMONIC EQUATIONS INVOLVING CRITICAL SOBOLEV EXPONENT
PORTUGALIAE MATHEMATICA Vol. 56 Fasc. 3 1999 ON NONHOMOGENEOUS BIHARMONIC EQUATIONS INVOLVING CRITICAL SOBOLEV EXPONENT M. Guedda Abstract: In this paper we consider the problem u = λ u u + f in, u = u
More informationMulti-layer radial solutions for a supercritical Neumann problem
Multi-layer radial solutions for a supercritical Neumann problem Massimo Grossi (Universitá di Roma I)..and Multi-layer radial solutions for a supercritical Neumann problem Massimo Grossi (Universitá di
More informationEXAMPLES OF NON-ISOLATED BLOW-UP FOR PERTURBATIONS OF THE SCALAR CURVATURE EQUATION ON NON LOCALLY CONFORMALLY FLAT MANIFOLDS.
EXAPLES OF NON-ISOLATED BLOW-UP FOR PERTURBATIONS OF THE SCALAR CURVATURE EQUATION ON NON LOCALLY CONFORALLY FLAT ANIFOLDS Frédéric Robert & Jérôme Vétois Abstract Solutions to scalar curvature equations
More informationNon-homogeneous semilinear elliptic equations involving critical Sobolev exponent
Non-homogeneous semilinear elliptic equations involving critical Sobolev exponent Yūki Naito a and Tokushi Sato b a Department of Mathematics, Ehime University, Matsuyama 790-8577, Japan b Mathematical
More informationAn introduction to Birkhoff normal form
An introduction to Birkhoff normal form Dario Bambusi Dipartimento di Matematica, Universitá di Milano via Saldini 50, 0133 Milano (Italy) 19.11.14 1 Introduction The aim of this note is to present an
More informationBOUND STATE SOLUTIONS FOR THE SUPERCRITICAL FRACTIONAL SCHRÖDINGER EQUATION. AMS subject classification: 35J61, 35R11, 53A30
BOUND STATE SOLUTIONS FOR THE SUPERCRITICAL FRACTIONAL SCHRÖDINGER EQUATION WEIWEI AO, HARDY CHAN, MARÍA DEL MAR GONZÁLEZ, AND JUNCHENG WEI Abstract. We prove the existence of positive solutions for the
More informationMULTIPLE SOLUTIONS FOR CRITICAL ELLIPTIC PROBLEMS WITH FRACTIONAL LAPLACIAN
Electronic Journal of Differential Equations, Vol. 016 (016), No. 97, pp. 1 11. ISSN: 107-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu MULTIPLE SOLUTIONS
More informationarxiv: v1 [math.ap] 26 Jul 2018
GLUEING A PEAK TO A NON-ZERO LIMITING PROFILE FOR A CRITICAL MOSER-TRUDINGER EQUATION arxiv:187.198v1 [math.ap] 6 Jul 18 GABRIELE MANCINI AND PIERRE-DAMIEN THIZY Abstract. Druet [6] proved that if f is
More informationAncient solutions to geometric flows
Columbia University Banff May 2014 Outline We will discuss ancient or eternal solutions to geometric flows, that is solutions that exist for all time < t < T where T (, + ]. Such solutions appear as blow
More informationA GLOBAL COMPACTNESS RESULT FOR SINGULAR ELLIPTIC PROBLEMS INVOLVING CRITICAL SOBOLEV EXPONENT
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY Volume 131, Number 6, Pages 1857 1866 S 000-9939(0)0679-1 Article electronically published on October 1, 00 A GLOBAL COMPACTNESS RESULT FOR SINGULAR ELLIPTIC
More informationEXISTENCE OF SOLUTIONS FOR KIRCHHOFF TYPE EQUATIONS WITH UNBOUNDED POTENTIAL. 1. Introduction In this article, we consider the Kirchhoff type problem
Electronic Journal of Differential Equations, Vol. 207 (207), No. 84, pp. 2. ISSN: 072-669. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu EXISTENCE OF SOLUTIONS FOR KIRCHHOFF TYPE EQUATIONS
More informationLOCAL BEHAVIOR AND GLOBAL EXISTENCE OF POSITIVE SOLUTIONS OF au λ u u λ. COMPORTEMENT LOCAL ET EXISTENCE GLOBALE DES SOLUTIONS POSITIVES DE au λ u u λ
Ann. I. H. Poincaré AN 19, 6 (2002) 889 901 2002 Éditions scientifiques et médicales Elsevier SAS. All rights reserved S0294-1449(02)00105-1/FLA LOCAL BEHAVIOR AND GLOBAL EXISTENCE OF POSITIVE SOLUTIONS
More informationASYMPTOTIC ANALYSIS FOR FOURTH ORDER PANEITZ EQUATIONS WITH CRITICAL GROWTH
ASYPTOTIC ANALYSIS FOR FOURTH ORDER PANEITZ EQUATIONS WITH CRITICAL GROWTH EANUEL HEBEY AND FRÉDÉRIC ROBERT Abstract. We investigate fourth order Paneitz equations of critical growth in the case of n-dimensional
More informationarxiv: v1 [math.ap] 5 Dec 2018
The non-local mean-field equation on an interval arxiv:8.65v [math.ap] 5 Dec 8 Azahara DelaTorre Albert-Ludwigs-Universität Freiburg Ali Hyder UBC Vancouver Yannick Sire John Hopkins University December
More informationThe Brézis-Nirenberg Result for the Fractional Elliptic Problem with Singular Potential
arxiv:1705.08387v1 [math.ap] 23 May 2017 The Brézis-Nirenberg Result for the Fractional Elliptic Problem with Singular Potential Lingyu Jin, Lang Li and Shaomei Fang Department of Mathematics, South China
More informationUniqueness of ground state solutions of non-local equations in R N
Uniqueness of ground state solutions of non-local equations in R N Rupert L. Frank Department of Mathematics Princeton University Joint work with Enno Lenzmann and Luis Silvestre Uniqueness and non-degeneracy
More informationCritical Point Theory 0 and applications
Critical Point Theory 0 and applications Introduction This notes are the result of two Ph.D. courses I held at the University of Florence in Spring 2006 and in Spring 2010 on Critical Point Theory, as
More information(x k ) sequence in F, lim x k = x x F. If F : R n R is a function, level sets and sublevel sets of F are any sets of the form (respectively);
STABILITY OF EQUILIBRIA AND LIAPUNOV FUNCTIONS. By topological properties in general we mean qualitative geometric properties (of subsets of R n or of functions in R n ), that is, those that don t depend
More informationRigidity Results for Elliptic PDEs
1/20 Rigidity Results for Elliptic PDEs Mostafa Fazly University of Alberta Collaborators: Nassif Ghoussoub (UBC) Juncheng Wei (UBC-Chinese U Hong Kong) Yannick Sire (UMarseille) Workshop on Partial Differential
More informationAn introduction to semilinear elliptic equations
An introduction to semilinear elliptic equations Thierry Cazenave Laboratoire Jacques-Louis Lions UMR CNRS 7598 B.C. 187 Université Pierre et Marie Curie 4, place Jussieu 75252 Paris Cedex 05 France E-mail
More informationExistence of Multiple Positive Solutions of Quasilinear Elliptic Problems in R N
Advances in Dynamical Systems and Applications. ISSN 0973-5321 Volume 2 Number 1 (2007), pp. 1 11 c Research India Publications http://www.ripublication.com/adsa.htm Existence of Multiple Positive Solutions
More informationMINIMAL SURFACES AND MINIMIZERS OF THE GINZBURG-LANDAU ENERGY
MINIMAL SURFACES AND MINIMIZERS OF THE GINZBURG-LANDAU ENERGY O. SAVIN 1. Introduction In this expository article we describe various properties in parallel for minimal surfaces and minimizers of the Ginzburg-Landau
More informationPERIODIC SOLUTIONS OF THE FORCED PENDULUM : CLASSICAL VS RELATIVISTIC
LE MATEMATICHE Vol. LXV 21) Fasc. II, pp. 97 17 doi: 1.4418/21.65.2.11 PERIODIC SOLUTIONS OF THE FORCED PENDULUM : CLASSICAL VS RELATIVISTIC JEAN MAWHIN The paper surveys and compares some results on the
More informationLinear and Nonlinear Aspects of Vortices : the Ginzburg-Landau Model. F. Pacard T. Rivière
Linear and Nonlinear Aspects of Vortices : the Ginzburg-Landau Model F. Pacard T. Rivière January 28, 2004 Contents 1 Qualitative Aspects of Ginzburg-Landau Equations 1 1.1 The integrable case..........................
More informationExistence and Multiplicity of Solutions for a Class of Semilinear Elliptic Equations 1
Journal of Mathematical Analysis and Applications 257, 321 331 (2001) doi:10.1006/jmaa.2000.7347, available online at http://www.idealibrary.com on Existence and Multiplicity of Solutions for a Class of
More informationEXISTENCE OF WEAK SOLUTIONS FOR A NONUNIFORMLY ELLIPTIC NONLINEAR SYSTEM IN R N. 1. Introduction We study the nonuniformly elliptic, nonlinear system
Electronic Journal of Differential Equations, Vol. 20082008), No. 119, pp. 1 10. ISSN: 1072-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu login: ftp) EXISTENCE
More informationExistence of Positive Solutions to Semilinear Elliptic Systems Involving Concave and Convex Nonlinearities
Journal of Physical Science Application 5 (2015) 71-81 doi: 10.17265/2159-5348/2015.01.011 D DAVID PUBLISHING Existence of Positive Solutions to Semilinear Elliptic Systems Involving Concave Convex Nonlinearities
More informationA PATTERN FORMATION PROBLEM ON THE SPHERE. 1. Introduction
Sixth Mississippi State Conference on Differential Equations and Computational Simulations, Electronic Journal of Differential Equations, Conference 5 007), pp. 97 06. ISSN: 07-669. URL: http://ejde.math.txstate.edu
More informationSobolev Spaces. Chapter Hölder spaces
Chapter 2 Sobolev Spaces Sobolev spaces turn out often to be the proper setting in which to apply ideas of functional analysis to get information concerning partial differential equations. Here, we collect
More informationLecture 5 - Hausdorff and Gromov-Hausdorff Distance
Lecture 5 - Hausdorff and Gromov-Hausdorff Distance August 1, 2011 1 Definition and Basic Properties Given a metric space X, the set of closed sets of X supports a metric, the Hausdorff metric. If A is
More informationSEMILINEAR ELLIPTIC EQUATIONS WITH DEPENDENCE ON THE GRADIENT
Electronic Journal of Differential Equations, Vol. 2012 (2012), No. 139, pp. 1 9. ISSN: 1072-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu SEMILINEAR ELLIPTIC
More informationLECTURE 15: COMPLETENESS AND CONVEXITY
LECTURE 15: COMPLETENESS AND CONVEXITY 1. The Hopf-Rinow Theorem Recall that a Riemannian manifold (M, g) is called geodesically complete if the maximal defining interval of any geodesic is R. On the other
More informationDescribing Blaschke products by their critical points
Describing Blaschke products by their critical points Oleg Ivrii July 2 6, 2018 Finite Blaschke Products A finite Blaschke product of degree d 1 is an analytic function from D D of the form F (z) = e iψ
More informationApplied Math Qualifying Exam 11 October Instructions: Work 2 out of 3 problems in each of the 3 parts for a total of 6 problems.
Printed Name: Signature: Applied Math Qualifying Exam 11 October 2014 Instructions: Work 2 out of 3 problems in each of the 3 parts for a total of 6 problems. 2 Part 1 (1) Let Ω be an open subset of R
More informationEXISTENCE OF NONTRIVIAL SOLUTIONS FOR A QUASILINEAR SCHRÖDINGER EQUATIONS WITH SIGN-CHANGING POTENTIAL
Electronic Journal of Differential Equations, Vol. 2014 (2014), No. 05, pp. 1 8. ISSN: 1072-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu EXISTENCE OF NONTRIVIAL
More informationFourier Transform & Sobolev Spaces
Fourier Transform & Sobolev Spaces Michael Reiter, Arthur Schuster Summer Term 2008 Abstract We introduce the concept of weak derivative that allows us to define new interesting Hilbert spaces the Sobolev
More informationBIHARMONIC WAVE MAPS INTO SPHERES
BIHARMONIC WAVE MAPS INTO SPHERES SEBASTIAN HERR, TOBIAS LAMM, AND ROLAND SCHNAUBELT Abstract. A global weak solution of the biharmonic wave map equation in the energy space for spherical targets is constructed.
More informationHardy Rellich inequalities with boundary remainder terms and applications
manuscripta mathematica manuscript No. (will be inserted by the editor) Elvise Berchio Daniele Cassani Filippo Gazzola Hardy Rellich inequalities with boundary remainder terms and applications Received:
More informationarxiv: v1 [math.fa] 26 Jan 2017
WEAK APPROXIMATION BY BOUNDED SOBOLEV MAPS WITH VALUES INTO COMPLETE MANIFOLDS PIERRE BOUSQUET, AUGUSTO C. PONCE, AND JEAN VAN SCHAFTINGEN arxiv:1701.07627v1 [math.fa] 26 Jan 2017 Abstract. We have recently
More informationRegularity and nonexistence results for anisotropic quasilinear elliptic equations in convex domains
Regularity and nonexistence results for anisotropic quasilinear elliptic equations in convex domains Ilaria FRAGALÀ Filippo GAZZOLA Dipartimento di Matematica del Politecnico - Piazza L. da Vinci - 20133
More informationLandesman-Lazer type results for second order Hamilton-Jacobi-Bellman equations
Author manuscript, published in "Journal of Functional Analysis 258, 12 (2010) 4154-4182" Landesman-Lazer type results for second order Hamilton-Jacobi-Bellman equations Patricio FELMER, Alexander QUAAS,
More informationInteraction energy between vortices of vector fields on Riemannian surfaces
Interaction energy between vortices of vector fields on Riemannian surfaces Radu Ignat 1 Robert L. Jerrard 2 1 Université Paul Sabatier, Toulouse 2 University of Toronto May 1 2017. Ignat and Jerrard (To(ulouse,ronto)
More informationAn introduction to semilinear elliptic equations
An introduction to semilinear elliptic equations Thierry Cazenave Laboratoire Jacques-Louis Lions UMR CNRS 7598 B.C. 187 Université Pierre et Marie Curie 4, place Jussieu 75252 Paris Cedex 05 France E-mail
More informationTOPICS IN NONLINEAR ANALYSIS AND APPLICATIONS. Dipartimento di Matematica e Applicazioni Università di Milano Bicocca March 15-16, 2017
TOPICS IN NONLINEAR ANALYSIS AND APPLICATIONS Dipartimento di Matematica e Applicazioni Università di Milano Bicocca March 15-16, 2017 Abstracts of the talks Spectral stability under removal of small capacity
More informationInvariant measures and the soliton resolution conjecture
Invariant measures and the soliton resolution conjecture Stanford University The focusing nonlinear Schrödinger equation A complex-valued function u of two variables x and t, where x R d is the space variable
More informationTHEOREMS, ETC., FOR MATH 516
THEOREMS, ETC., FOR MATH 516 Results labeled Theorem Ea.b.c (or Proposition Ea.b.c, etc.) refer to Theorem c from section a.b of Evans book (Partial Differential Equations). Proposition 1 (=Proposition
More informationA CONVEX-CONCAVE ELLIPTIC PROBLEM WITH A PARAMETER ON THE BOUNDARY CONDITION
A CONVEX-CONCAVE ELLIPTIC PROBLEM WITH A PARAMETER ON THE BOUNDARY CONDITION JORGE GARCÍA-MELIÁN, JULIO D. ROSSI AND JOSÉ C. SABINA DE LIS Abstract. In this paper we study existence and multiplicity of
More informationMULTIPLE POSITIVE SOLUTIONS FOR KIRCHHOFF PROBLEMS WITH SIGN-CHANGING POTENTIAL
Electronic Journal of Differential Equations, Vol. 015 015), No. 0, pp. 1 10. ISSN: 107-6691. URL: http://ejde.math.txstate.edu or http://ejde.math.unt.edu ftp ejde.math.txstate.edu MULTIPLE POSITIVE SOLUTIONS
More informationA Priori Bounds, Nodal Equilibria and Connecting Orbits in Indefinite Superlinear Parabolic Problems
A Priori Bounds, Nodal Equilibria and Connecting Orbits in Indefinite Superlinear Parabolic Problems Nils Ackermann Thomas Bartsch Petr Kaplický Pavol Quittner Abstract We consider the dynamics of the
More informationUniqueness of ground states for quasilinear elliptic equations in the exponential case
Uniqueness of ground states for quasilinear elliptic equations in the exponential case Patrizia Pucci & James Serrin We consider ground states of the quasilinear equation (.) div(a( Du )Du) + f(u) = 0
More informationSymmetry breaking in Caffarelli-Kohn-Nirenberg inequalities
Symmetry breaking in Caffarelli-Kohn-Nirenberg inequalities p. 1/47 Symmetry breaking in Caffarelli-Kohn-Nirenberg inequalities Jean Dolbeault dolbeaul@ceremade.dauphine.fr CEREMADE CNRS & Université Paris-Dauphine
More informationarxiv: v1 [math.ap] 16 Jan 2015
Three positive solutions of a nonlinear Dirichlet problem with competing power nonlinearities Vladimir Lubyshev January 19, 2015 arxiv:1501.03870v1 [math.ap] 16 Jan 2015 Abstract This paper studies a nonlinear
More informationξ,i = x nx i x 3 + δ ni + x n x = 0. x Dξ = x i ξ,i = x nx i x i x 3 Du = λ x λ 2 xh + x λ h Dξ,
1 PDE, HW 3 solutions Problem 1. No. If a sequence of harmonic polynomials on [ 1,1] n converges uniformly to a limit f then f is harmonic. Problem 2. By definition U r U for every r >. Suppose w is a
More informationNonlinear days in New York. Wednesday April 25th. Thursday April 26th. Friday April 27th
Nonlinear days in New York April 25th-27th, 2018 Science Center, Room 4102 Graduate Center, CUNY Wednesday April 25th 9 am - 9:30 am: Breakfast 9:30 am - 10:30 am: Lucio Boccardo 10:30 am - 10:45 am: Coffee
More information