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• Multiple solutions with prescribed minimal period for second order odd Newtonian systems with symmetries

  Wiesław Krawcewicz, Yanli Lv, Huafeng Xiao

  659 - 679

  2016-06-01
• Existence of multiple solutions for a quasilinear elliptic problem

  Jorge Cossio, Sigifredo Herrón, Carlos Vélez

  531 - 551

  2017-10-01
• Multiple solutions to the Bahri-Coron problem in the complement of a thin tubular neighbourhood of a manifold

  Monica Clapp, Juan Carlos Fernández

  1119 - 1138

  2015-12-01
• Multiple nodal solutions for semilinear Robin problems with indefinite linear part and concave terms

  Nikolaos S. Papageorgiou, Calogero Vetro, Francesca Vetro

  269 - 286

  2017-08-19
• Existence and multiplicity of positive solutions for a Schrodinger-Poisson system with a perturbation

  Juntao Sun, Tsung-fang Wu

  967 - 998

  2015-12-01
• Multiple solutions for an impulsive boundary value problems on the halfline via Morse theory

  Karima Ait-Mahiout, Smail Djebali, Toufik Moussaoui

  219 - 240

  2016-03-01
• Multiple positive solutions for a fractional elliptic systems involving sign-changing weight

  Haining Fan

  757 - 781

  2017-05-21
• Topology of twists, extremising twist paths and multiple solutions to the nonlinear system in variation $\mathscr{L}[u] = \nabla \mathscr{P}$

  George Morrison, Ali Taheri

  833 - 862

  2019-11-09
• Multiplicity theorems for resonant and superlinear nonhomogeneous elliptic equations

  Nikolaos S. Papageorgiou, Vicenţiu D. Rădulescu

  283 - 320

  2016-07-06
• A fourth-order equation with critical growth: the effect of the domain topology

  Jessyca Lange Fereira Melo, Ederson Moreira dos Santos

  551 - 574

  2015-06-01
• Multiple positive solutions for a class of variational systems

  Alfonso Castro, David G. Costa, Ratnasingham Shivaji

  1 - 8

  2017-06-25
• Multiple solutions for quasilinear equation involving Hardy critical Sobolev exponents

  Fengshuang Gao, Yuxia Guo

  31 - 61

  2020-05-30
• Multiple periodic solutions for one-sided sublinear systems: A refinement of the Poincaré-Birkhoff approach

  Tobia Dondè, Fabio Zanolin

  565 - 581

  2020-05-31
• Multiple solutions for Schrödinger-Poisson systems with critical nonlocal term

  Zuji Guo

  495 - 513

  2019-11-14
• On a singular semilinear elliptic problem: multiple solutions via critical point theory

  George Smyrlis, Francesca Faraci

  459 - 491

  2018-05-23
• Existence of solutions for nonlinear p-Laplacian difference equations

  Lorena Saavedra, Stepan Tersian

  151 - 167

  2017-07-07
• On exact multiplicity for a second order equation with radiation boundary conditions

  Pablo Amster, Mariel P. Kuna

  233 - 246

  2019-07-13
• Resonant Robin problems with indefinite and unbounded potential

  Nikolaos S. Papageorgiou, George Smyrlis

  51 - 74

  2016-10-05
• Multiplicity and concentration results for a class of singularly perturbed critical quasilinear Schrödinger equation

  Yongpeng Chen, Zhongwei Tang

  135 - 171

  2020-08-27
• Existence of periodic solutions for $p$-Laplacian neutral functional equation with multiple deviating arguments

  Tian Xiang, Rong Yuan

  235 - 258

  2011-04-23
• Multiple nonsemitrivial solutions for a class of degenerate quasilinear elliptic systems

  A. Hadjian, N. B. Zographopoulos, Ghasem Alizadeh Afrouzi

  385 - 397

  2015-06-01
• Multiple periodic solutions of Hamiltonian systems in the plane

  Alessandro Fonda, Luca Ghirardelli

  27 - 38

  2010-04-23
• Multiple solutions for the mean curvature equation

  Sebastián Lorca, Marcelo Montenegro

  61 - 68

  2010-04-23
• Multiple Normalized Solutions for Choquard equations involving Kirchhoff type perturbation

  Zeng Liu

  297 - 319

  2019-07-21
• Generalized limit theorem and bifurcation for problems with Pucci's operator

  Guowei Dai

  229 - 261

  2020-08-29
• Strongly resonant Robin problems with idefinite and unbounded potential

  Nikolaos S. Papageorgiou, George Smyrlis

  511 - 527

  2016-12-16
• Compact components of positive solutions for superlinear indefinite elliptic problems of mixed type

  Santiago Cano-Casanova

  45 - 72

  2004-03-01
• Existence and multiplicity results for a non-homogeneous fourth order equation

  Ali Maalaoui, Vittorio Martino

  273 - 300

  2012-04-23
• Multiple solutions to a Dirichlet eigenvalue problem with $p$-Laplacian

  Salvatore A. Marano, Dumitru Motreanu, Daniele Puglisi

  277 - 291

  2013-04-22
• Resonant Neumann equations with indefinite linear part

  Roberto Livrea, Nikolaos S. Papageorgiou, Giuseppina Barletta

  469 - 491

  2015-06-01
• Multiple solitary wave solutions of nonlinear Schrödinger systems

  Rushun Tian, Zhi-Qiang Wang

  203 - 223

  2011-04-23
• Multiplicity of solutions for some elliptic equations involving critical and supercritical Sobolev exponents

  Shujie Li, Zhaoli Liu

  235 - 261

  2006-12-01
• Multiple positive symmetric solutions of a singularly perturbed elliptic equation

  Mónica Clapp, Gustavo Izquierdo

  17 - 39

  2001-09-01
• Existence and multiplicity results for wave equations with time-independent nonlinearity

  Juha Berkovits, Herbert Leinfelder, Vesa Mustonen

  273 - 295

  2003-12-01
• Multiple nonnegative solutions for elliptic boundary value problems involving the $p$-Laplacian

  Giovanni Anello

  355 - 366

  2005-12-01
• Nodal solutions of perturbed elliptic problem

  Yi Li, Zhaoli Liu, Cunshan Zhao

  49 - 68

  2008-09-01
• Existence and multiplicity of nontrivial solutions for semilinear elliptic Dirichlet problems across resonance

  Xianojun Chang, Yong Li

  285 - 310

  2010-04-23
• Multiple solutions of degenerate perturbed elliptic problems involving a subcritical Sobolev exponent

  Florica Şt. Cîrstea, Vicenţiu D. Rădulescu

  283 - 300

  2000-06-01
• Coercive functionals and their relationship to multiplicity of solution to nonlocal boundary value problems

  Christopher S. Goodrich

  409 - 426

  2019-10-20
• Some bifurcation results and multiple solutions for the $p$-Laplacian equation

  Mingzheng Sun, Jiabao Su, Leiga Zhao

  1 - 14

  2021-12-02
• Eigenvalue criteria for existence of multiple positive solutions of nonlinear boundary value problems of local and nonlocal type

  Jeffrey R. L. Webb, Kunquan Q. Lan

  91 - 115

  2006-03-01
• On extreme values of Nehari manifold method via nonlinear Rayleigh's quotient

  Yavdat Il'yasov

  683 - 714

  2017-03-04
• Existence of multiple solutions of some second order impulsive differential equations

  Jing Xiao, Juan J. Nieto, Zhiguo Luo

  287 - 296

  2016-04-12
• Existence of multiple positive solutions for a nonlocal boundary value problem

  George L. Karakostas, Panagiotis Ch. Tsamatos

  109 - 121

  2002-03-01
• Multiple nontrivial solutions of Neumann $p$-Laplacian systems

  Dumitru Motreanu, Kanishka Perera

  41 - 48

  2009-09-01
• Multiple interior layers of solutions to perturbed elliptic Sine-Gordon equation on an interval

  Tetsutaro Shibata

  329 - 357

  2000-06-01
• Symmetric systems of Van Der Pol equations

  Zolman Balanov, Meymanat Farzamirad, Wiesław Krawcewicz

  29 - 90

  2006-03-01
• A three solutions theorem for Pucci's extremal operator and its application

  Mohan Mallick, Ram Baran Verma

  161 - 179

  2021-09-12
• Multiple periodic solutions for autonomous conservative systems

  Silvia Cingolani, Monica Lazzo

  159 - 167

  1999-09-01
• Multiple solutions for asymptotically linear resonant elliptic problems

  Francisco Odair de Paiva

  227 - 247

  2003-06-01
• Index theory for linear elliptic equation and multiple solutions for asymptotically linear elliptic equation with resonance

  Yuan Shan, Keqiang Li

  89 - 104

  2016-04-12
• Asymptotically critical points and multiple elastic bounce trajectories

  Antonio Marino, Claudio Saccon

  351 - 395

  2007-12-01
• On multiple solutions of the exterior Neumann problem involving critical Sobolev exponent

  Jan Chabrowski, Michael Willem

  89 - 108

  2005-09-01
• Nabla theorems and multiple solutions for some noncooperative elliptic systems

  Antonio Marino, Claudio Saccon

  213 - 237

  2001-06-01
• Nodal solutions to superlinear biharmonic equations via decomposition in dual cones

  Tobias Weth

  33 - 52

  2006-09-01
• Multiple periodic solutions of asymptotically linear Hamiltonian systems via Conley index theory

  Guihua Fei

  89 - 114

  2004-03-01
• Multiplicity of solutions for nonhomogeneuous nonlinear elliptic equations with critical exponents

  Norimichi Hirano

  269 - 281

  2001-12-01
• Multiple solutions of compact $H$-surfaces in Euclidean space

  Yuxin Ge, Feng Zhou

  355 - 367

  2003-12-01
• Separating solutions of nonlinear problems using nonlinear generalized Rayleigh quotients

  Marcos Leandro Carvalho, Yavdat Il'yasov, Carlos Alberto Santos

  1 - 28

  2021-12-02
• A class of positive linear operators and applications to nonlinear boundary value problems

  Jeffrey R. L. Webb

  221 - 242

  2012-04-23
• Remarks on multiple solutions for asymptotically linear elliptic boundary value problems

  Kung Ching Chang, Shujie Li, Jiaquan Liu

  179 - 187

  1994-03-01
• Multiplicity of positive solutions for semilnear elliptic problems with antipodal symmetry

  Norimichi Hirano

  155 - 166

  2005-03-01
• Existence of multiple solutions of a two-point boundary value problem at resonance

  Shujie Li, Jiabao Su

  123 - 135

  1997-09-01
• Critical superlinear Ambrosetti-Prodi problems

  Djairo Guedes de Figueiredo, Yang Jianfu

  59 - 80

  1999-09-01
• A semilinear elliptic equation with convex and concave nonlinearities

  Elliot Tonkes

  251 - 271

  1999-06-01
• Multiple positive solutions for some nonlinear elliptic systems

  Kazunaga Tanaka

  15 - 45

  1997-09-01
• Solutions of superlinear at zero elliptic equations via Morse theory

  Vitaly Moroz

  387 - 397

  1997-12-01