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• Periodic solutions for second order singular differential systems with parameters

  Fanglei Wang, Jifeng Chu, Stefan Siegmund

  549 - 562

  2015-12-01
• Periodic bifurcation problems for fully nonlinear neutral functional differential equations via an integral operator approach: the multidimensional degeneration case

  Jean-Francois Couchouron, Mikhail I. Kamenskii, Boris Mikhaylenko, Paolo Nistri

  631 - 664

  2015-12-01
• Periodic solutions of singular equations

  Antonio Ureña

  55 - 72

  2016-03-01
• 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
• Nielsen number, impulsive differential equations and problem of Jean Leray

  Jan Andres

  383 - 400

  2020-08-27
• Asymptotically almost periodic solutions of limit periodic difference systems with coefficients from commutative groups

  Petr Hasil, Michal Veselý

  515 - 535

  2019-07-27
• Periodic solutions for the non-local operator $(-\Delta+m^{2})^{s}-m^{2s}$ with $m\geq 0$

  Vincenzo Ambrosio

  75 - 103

  2016-10-05
• Periodic solutions of vdP and vdP-like systems on 3-Tori

  Zalman Balanov, Edward Hooton, Adrian Murza

  253 - 268

  2017-08-19
• Coincidence degree methods in almost periodic differential equations

  Liangping Qi, Rong Yuan

  185 - 216

  2017-08-19
• Periodic solutions to singular second order differential equations: the repulsive case

  Robert Hakl, Pedro J. Torres, Manuel Zamora

  199 - 220

  2012-04-23
• An application of coincidence degree theory to cyclic feedback type systems associated with nonlinear differential operators

  Guglielmo Feltrin, Fabio Zanolin

  683 - 726

  2017-10-28
• On existence of periodic solutions for Kepler type problems

  Pablo Amster, Julián Haddad

  465 - 476

  2016-08-17
• Multiple periodic solutions for one-sided sublinear systems: A refinement of the Poincaré-Birkhoff approach

  Tobia Dondè, Fabio Zanolin

  565 - 581

  2020-05-31
• Periodic solutions of the perturbed symmetric Euler top

  Adriana Buică, Isaac A. García

  91 - 100

  2010-04-23
• Eight positive periodic solutions to three species non-autonomous Lotka-Volterra cooperative systems with harvesting terms

  Yongkun Li, Kaihong Zhao

  225 - 234

  2011-04-23
• Symmetric systems of Van Der Pol equations

  Zolman Balanov, Meymanat Farzamirad, Wiesław Krawcewicz

  29 - 90

  2006-03-01
• Multiple periodic solutions of Hamiltonian systems in the plane

  Alessandro Fonda, Luca Ghirardelli

  27 - 38

  2010-04-23
• Harmonic perturbations with delay of periodic separated variables differential equations

  Luca Bisconti, Marco Spadini

  261 - 281

  2015-09-01
• Averaging method for neutral differential equations in finite dimension

  Jean-Franҫois Couchouron, Mikhail I. Kamenskiĭ

  221 - 233

  2010-04-23
• Note on periodic solutions of relativistic pendulum type systems

  Kazuya Hata, Jiaquan Liu, Zhi-Qiang Wang

  417 - 425

  2013-04-22
• Periodic solutions to nonlinear equations with oblique boundary conditions

  Walter Allergretto, Duccio Papini

  225 - 243

  2012-04-23
• Sharkovskii's theorem, differential inclusions, and beyond

  Jan Andres, Tomáš Fürst, Karel Pastor

  149 - 168

  2009-03-01
• Periodic solutions of perturbed Hamiltonian systems in the plane by the use of the Poincaré-Birkhoff theorem

  Alessandro Fonda, Marco Sabatini, Fabio Zanolin

  29 - 52

  2012-04-23
• Existence of periodic solutions for $p$-Laplacian neutral functional equation with multiple deviating arguments

  Tian Xiang, Rong Yuan

  235 - 258

  2011-04-23
• Multibump periodic solutions of a family of Hamiltonian systems

  Vittorio Coti Zelati, Paul H. Rabinowitz

  31 - 57

  1994-09-01
• Forced singular oscillators and the method of lower and upper solutions

  Denis Bonheure, Colette De Coster

  297 - 317

  2003-12-01
• Asymptotic behavior of solutions of 1D-Burgers equation with quasi-periodic forcing

  Ya. G. Sinai

  219 - 226

  1998-06-01
• Nonlinear eigenvalue problems admitting eigenfunctions with known geometric properties

  Michael Heid, Hans-Peter Heinz

  17 - 51

  1999-03-01
• Carathéodory periodic perturbations of the zero vector field on manifolds

  Massimo Furi, Maria Patrizia Pera

  79 - 92

  1997-09-01
• Degree computations for positively homogeneous differential equations

  Christian Fabry, Patrick Habets

  73 - 88

  2004-03-01
• Periodic solutions of differential inclusions with retards

  Grzegorz Gabor, Radosław Pietkun

  103 - 123

  2000-09-01
• Periodic solutions of fractional Laplace equations: Least period, axial symmetry and limit

  Zhenping Feng, Zhuoran Du

  633 - 651

  2022-12-10
• Bifurcation of periodic solutions of the Navier-Stokes equations in a thin domain

  Russell Johnson, Paolo Nistri, Mikhail I. Kamenskiĭ

  281 - 300

  1999-06-01
• Global bifurcation of periodic solutions

  Kazimierz Gęba, Wacław Marzantowicz

  67 - 93

  1993-03-01
• Topological degree and generalized asymmetric oscillators

  Alessandro Fonda

  171 - 188

  2006-09-01
• Periodic solutions for systems of functional-differential semilinear equations at resonance

  Pablo Amster, Julián Epstein, Arturo Sanjuán Cuéllar

  591 - 607

  2021-12-05
• Multiple periodic solutions for autonomous conservative systems

  Silvia Cingolani, Monica Lazzo

  159 - 167

  1999-09-01
• Periodic solutions of an asymptotically linear wave equation

  Shujie Li, Andrzej Szulkin

  211 - 230

  1993-06-01
• Periodic solutions to reversible second order autonomous systems with commensurate delays

  Zalman Balanov, Fulai Chen, Jing Guo, Wiesław Krawcewicz

  475 - 498

  2021-06-07
• Periodic solutions of a second order differential equation with discontinuities in the spatial variable

  Martin Šenkyřík

  199 - 206

  1995-09-01
• Hopf bifurcation and stability analysis for a delayed equation with φ-Laplacian

  Pablo Amster, Mariel P. Kuna, Dionicio Santos

  545 - 559

  2024-09-21
• Periodic solutions of superlinear and sublinear state-dependent discontinuous differential equations

  Juan J. Nieto, José M. Uzal

  79 - 96

  2021-09-12
• Periodic solutions and optimization problems for a class of semilinear parabolic control systems

  Walter Allergretto, Paolo Nistri

  345 - 356

  1995-06-01
• Periodic solutions with irrational frequency for a class of semilinear wave equations with variable coefficients

  Hui Wei

  625 - 641

  2023-12-31
• Existence of periodic solutions for some singular elliptic equations with strong resonant data

  Laura Gonella

  157 - 170

  2016-04-12
• Periodic solutions for evolution complementarity systems: a method of guiding functions

  George Dinca, Daniel Goeleven

  255 - 267

  2006-06-01
• A strongly nonlinear Neumann problem at resonance with restrictions on the nonlinearity just in one direction

  Jean Mawhin, David Ruiz

  1 - 14

  2002-09-01
• Non-collision periodic solutions for a class of symmetric 3-body type problems

  Antonio Ambrosetti, Vittorio Coti Zelati

  197 - 207

  1994-06-01
• On detecting of chaotic dynamics via isolating chains

  Leszek Pieniążek

  115 - 138

  2003-09-01
• Existence of periodic traveling-wave solutions for a nonlinear Schrödinger system: A topological approach

  Nghiem V. Nguyen

  129 - 155

  2016-04-12
• Lagrangian systems with Lipschitz obstacle on manifolds

  Sergio Lancelotti, Marco Marzocchi

  229 - 253

  2006-06-01
• Well-ordered and non-well-ordered lower and upper solutions for periodic 2N-dimensional systems

  Giuliano Klun, Andrea Sfecci

  177 - 202

  2025-03-08