Found 165 Documents (Results 1–100)
Boundary value problems associated with Hamiltonian systems coupled with positively-\((p, q)\)-homogeneous systems. (English) Zbl 1541.37069
Multiplicity of neutrally stable periodic orbits with coexistence in the chemostat subject to periodic removal rate. (English) Zbl 1534.34054
A further multiplicity result for Lagrangian systems of relativistic oscillators. (English) Zbl 1518.34013
Local exponential stability of several almost periodic positive solutions for a classical controlled GA-predation ecosystem possessed distributed delays. (English) Zbl 1510.92194
Infinitely many rotating periodic solutions for local superquadratic damped Hamiltonian systems with sublinear impulsive effects. (English) Zbl 1508.37077
Multiplicity and minimality of periodic solutions to fourth-order super-quadratic difference systems. (English) Zbl 1505.39009
MSC:
39A23
Multiplicity of periodic solutions for second-order perturbed Hamiltonian systems with local superquadratic conditions. (English) Zbl 1505.37069
A singular periodic Ambrosetti-Prodi problem of Rayleigh equations without coercivity conditions. (English) Zbl 1503.34090
Reviewer: Alessandro Fonda (Trieste)
Multiplicity of homoclinic solutions for second order Hamiltonian systems with local conditions at the origin. (English) Zbl 1496.37064
Existence of a ground-state and infinitely many homoclinic solutions for a periodic discrete system with sign-changing mixed nonlinearities. (English) Zbl 1486.39023
Multiplicity of periodic solutions for second order Hamiltonian systems with mixed nonlinearities. (English) Zbl 1513.70062
Cubic nonlinear differential system, their periodic solutions and bifurcation analysis. (English) Zbl 1525.34065
Nielsen number, impulsive differential equations and problem of Jean Leray. (English) Zbl 1480.34037
Reviewer: Sotiris K. Ntouyas (Ioannina)
Multiplicity of homoclinic solutions for second order Hamiltonian systems. (Chinese. English summary) Zbl 1474.37068
MSC:
37J46
Existence of multiple positive periodic solutions for discrete hematopoiesis models with a unimodal production function. (English) Zbl 1451.37113
Multiplicity of periodic solutions for a class of second-order perturbed Hamiltonian systems. (English) Zbl 1477.34066
Reviewer: Kwok-wai Chung (Hong Kong)
Index iteration theories for periodic orbits: old and new. (English) Zbl 1457.37082
Reviewer: Zdzisław Dzedzej (Gdańsk)
Multiplicity of periodic solutions for second order Hamiltonian systems with asymptotically quadratic conditions. (English) Zbl 1430.37066
The problem of the center for cubic differential systems with the line at infinity and an affine real invariant straight line of total algebraic multiplicity five. (English) Zbl 1474.34230
Multiplicity of periodic solutions for a class of non-autonomous second-order Hamiltonian systems. (Chinese. English summary) Zbl 1449.37043
Periodic solutions to parameter-dependent equations with a \(\phi\)-Laplacian type operator. (English) Zbl 1434.34037
Reviewer: Alessandro Fonda (Trieste)
Existence and multiplicity of positive periodic solutions of a class of nonlinear third-order differential equation. (Chinese. English summary) Zbl 1438.34133
Exact multiplicity and stability of periodic solutions for Duffing equation with bifurcation method. (English) Zbl 1472.34077
Multiplicity of forced oscillations for scalar retarded functional differential equations. (English) Zbl 1395.34074
Reviewer: Ábel Garab (Szeged)
Positive solutions for super-sublinear indefinite problems: high multiplicity results via coincidence degree. (English) Zbl 1393.34038
Reviewer: Gennaro Infante (Arcavata di Rende)
A periodic problem for first-order differential equations with locally coercive nonlinearities. (English) Zbl 1448.34085
Bifurcation from infinity and multiplicity of solutions for nonlinear periodic boundary value problems. (English) Zbl 1448.34041
Multiple periodic solutions for two classes of nonlinear difference systems involving classical \((\phi_1,\phi_2)\)-Laplacian. (English) Zbl 1412.39015
MSC:
39A23
37J45
Existence and multiplicity of periodic solutions for a generalized hematopoiesis model. (English) Zbl 1378.34094
Infinitely many solutions for second-order quasilinear periodic boundary value problems with impulsive effects. (English) Zbl 1376.34026
Multiplicity of periodic solutions for systems of weakly coupled parametrized second order differential equations. (English) Zbl 1366.34057
Reviewer: Alessandro Fonda (Trieste)
Periodic solutions of an asymptotically linear Dirac equation. (English) Zbl 1368.35228
Reviewer: Boris A. Malomed (Tel Aviv)
Multiplicity of forced oscillations for the spherical pendulum acted on by a retarded periodic force. (English) Zbl 1381.34087
Reviewer: Anatoli F. Ivanov (Lehman)
On a singular periodic Ambrosetti-Prodi problem. (English) Zbl 1385.34030
Reviewer: Rafael Ortega (Granada)
Global solution curves for several classes of singular periodic problems. (English) Zbl 1373.34064
Reviewer: Radu Precup (Cluj-Napoca)
Dynamics of an almost periodic delayed predator-prey model with Beddington-DeAngelis functional response. (English) Zbl 1442.34092
Nonlinear double resonant periodic problems with the scalar \(p\)-Laplacian. (English) Zbl 1425.34045
On existence of periodic solutions for Kepler type problems. (English) Zbl 1375.34065
Reviewer: Jean Mawhin (Louvain-La-Neuve)
Existence and multiplicity of periodic solutions for nonautonomous second order Hamiltonian systems. (English) Zbl 1342.34059
Existence and multiplicity of positive almost periodic solutions for a non-autonomous SIR epidemic model. (English) Zbl 1341.34054
Reviewer: Petro Feketa (Erfurt)
Exact multiplicity and stability of solutions of second-order Neumann boundary value problem. (English) Zbl 1410.34126
Positive, negative and mixed-type solutions for periodic vector differential equations. (English) Zbl 1316.34027
Reviewer: Ziheng Zhang (Tianjin)
Quadratic autocatalysis with non-linear decay. (English) Zbl 1307.80007
Reviewer: Piotr Garbaczewski (Opole)
Multiplicity of positive almost periodic solutions in a delayed Hassell-Varley-type predator-prey model with harvesting on prey. (English) Zbl 1292.34077
Existence and multiplicity of solutions for nonlinear periodic problems with the scalar \(p\)-Laplacian and double resonance. (English) Zbl 1321.34036
A note on the minimal periodic solutions of nonconvex superlinear Hamiltonian system. (English) Zbl 1293.34058
Studying periodic solutions in mathematical models of micromechanics with a pulsed periodic impact. (Russian. English summary) Zbl 1289.34053
Periodic solutions for a class of second order delay systems. (English) Zbl 1282.34074
Reviewer: Zhanyuan Hou (London)
Multiplicity of almost periodic oscillations in a harvesting mutualism model with time delays. (English) Zbl 1278.34095
Positive periodic solutions for higher-order functional difference systems depending on a parameter. (English) Zbl 1279.39007
Reviewer: Stefan Balint (Timişoara)
Bifurcation of positive periodic solutions of first-order impulsive differential equations. (English) Zbl 1281.34031
Polynomial differential equations with piecewise linear coefficients. (English) Zbl 1272.34050
Reviewer: Klaus R. Schneider (Berlin)
Multiplicity results of periodic solutions for systems of first order delay differential equation. (English) Zbl 1239.34084
Reviewer: Meng Fan (Changchun)
Nondegeneracy of the periodically forced Liénard differential equation with \(\phi \)-Laplacian. (English) Zbl 1231.34077
Reviewer: Antonio Cañada Villar (Granada)
Positive solutions of a nonlinear third-order periodic boundary value problem. (Chinese. English summary) Zbl 1240.34131
Existence and multiplicity of solutions for asymptotically linear second-order Hamiltonian systems. (Existence and multiplicity of solutions for asymptotically linear second-order Hamilton systems.) (Chinese. English summary) Zbl 1240.37075
MSC:
37J45
70H12
Multiple periodic solutions of Hamiltonian systems in the plane. (English) Zbl 1221.34111
MSC:
34C25
37J45
On the multiplicity of solutions for non-linear periodic problems with the non-linearity crossing several eigenvalues. (English) Zbl 1206.34029
Reviewer: Valerii V. Obukhovskij (Voronezh)
Multiple periodic solutions of scalar second order differential equations. (English) Zbl 1245.34049
Reviewer: Olufemi Adeyinka Adesina (Ile-Ife)
Existence and multiplicity results for nonlinear periodic boundary value problems. (English) Zbl 1195.34033
Reviewer: Khanlar R. Mamedov (Mersin)
Local existence and multiplicity of positive solutions to a fourth-order periodic boundary value problem with variable coefficient. (Chinese. English summary) Zbl 1224.34081
Multiplicity of positive periodic solutions for delayed difference equation with impulses. (English) Zbl 1222.39013
Reviewer: Bogdan Sasu (Timişoara)
Existence of two periodic solutions to an \(n\)-dimensional neutral functional differential system. (English) Zbl 1199.34335
Positive periodic solutions for second-order differential equations with generalized neutral operator. (English) Zbl 1192.34080
Reviewer: Zhiming Guo (Ontario)
Existence and multiplicity of solutions for second order periodic systems with the \(p\)-Laplacian and a nonsmooth potential. (English) Zbl 1187.34020
Reviewer: Abdelghani Ouahab (Sidi Bel Abbes)
Long-term coexistence for a competitive system of spatially varying gradient reaction-diffusion equations. (English) Zbl 1154.35384
Existence nonexistence and multiplicity of periodic solutions for a kind of functional differential equation with parameter. (English) Zbl 1166.34038
Reviewer: Adriana Buică (Cluj-Napoca)
Existence of multiple positive solutions of some nonlinear fourth-order periodic boundary value problem. (Chinese. English summary) Zbl 1199.34097
An existence and multiplicity result for a periodic boundary value problem. (English) Zbl 1199.34065
MSC:
34B15
Two periodic solutions of \(N\)-dimensional first-order neutral functional differential systems. (English) Zbl 1169.34333
Multiple periodic solutions of \(p\)-Laplacian equation with one-side Nagumo condition. (English) Zbl 1169.34011
Reviewer: Irena Rachůnková (Olomouc)
Existence of sign-changing periodic solutions of second order difference equations. (English) Zbl 1186.39018
Reviewer: Weinian Zhang (Sichuan)
MSC:
39A23
Bifurcation and stability of periodic solutions of Duffing equations. (English) Zbl 1159.34033
Reviewer: Irena Rachůnková (Olomouc)
On the multiplicity of the circumference in planar polynomial vector fields. (English) Zbl 1158.34019
Reviewer: Iliya Iliev (Sofia)
Existence, multiplicity, and dependence on a parameter for a periodic boundary value problem. (English) Zbl 1203.34028
Reviewer: D. O’Regan (Galway)
MSC:
34B15
Normalized eigenvectors of a perturbed linear operator via general bifurcation. (English) Zbl 1152.47051
Reviewer: Jesús Hernández (Madrid)
Multiplicity and stability of time-periodic solutions of Ginzburg-Landau equations of superconductivity. (English) Zbl 1138.35088
Reviewer: Vicenţiu D. Rădulescu (Craiova)
Existence and multiplicity of periodic solutions for semilinear Duffing equations at resonance. (English) Zbl 1263.34043
A global solution curve for a class of periodic problems, including the pendulum equation. (English) Zbl 1155.34021
Reviewer: Jinhai Chen (Hongkong)
Multiplicity results for interfaces of Ginzburg-Landau-Allen-Cahn equations in periodic media. (English) Zbl 1152.35038
High action orbits for Tonelli Lagrangians and superlinear Hamiltonians on compact configuration spaces. (English) Zbl 1114.37034
Reviewer: Maria Saprykina (Kingston)
Asymptotic analysis of oscillating parametric integrals and ordinary boundary value problems at resonance. (English) Zbl 1086.34016
Reviewer: Anatolij Ivan Kolosov (Khar’kov)
Periodic solutions of nonlinear vibrating beams. (English) Zbl 1074.35084
Reviewer: Petr Necesal (Plzen)
Stability and bifurcation of periodic solutions of a periodic equation. (Chinese. English summary) Zbl 1067.34044
Harmonic solutions to perturbations of periodic separated variables ODEs on manifolds. (English) Zbl 1054.34074
Reviewer: Sergei Yu. Pilyugin (St. Petersburg)
Nonuniqueness for a critical nonlinear heat equation with any initial data. (English) Zbl 1036.35081
Topological fixed point principles for boundary value problems. (English) Zbl 1029.55002
Topological Fixed Point Theory and its Applications. 1. Dordrecht: Kluwer Academic Publishers. xv, 761 p. (2003).
Reviewer: Christian Fenske (Gießen)
On subharmonic solutions of systems of difference equations with periodic perturbations. II: Multiplicity and stability. (English) Zbl 1011.39015
Reviewer: Lothar Berg (Rostock)
MSC:
39A11
39A05
Multiplicity of forced oscillations on manifolds and applications to motion problems with one-dimensional constraints. (English) Zbl 1016.34031
Reviewer: Andrei Ronto (Kyïv)
Multiplicity of forced oscillations for scalar differential equations. (English) Zbl 0979.34035
Reviewer: Bin Liu (Beijing)
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