EuDML | Browse

The search session has expired. Please query the service again.

Items

All a b c d e f g h i j k l m n o p q r s t u v w x y z Other

Displaying 21 – 40 of 79

Plus-operators in Krein spaces and dichotomous behavior of irreversible dynamical systems with discrete time

V. Khatskevich, L. Zelenko (2006)

Studia Mathematica

We study dichotomous behavior of solutions to a non-autonomous linear difference equation in a Hilbert space. The evolution operator of this equation is not continuously invertible and the corresponding unstable subspace is of infinite dimension in general. We formulate a condition ensuring the dichotomy in terms of a sequence of indefinite metrics in the Hilbert space. We also construct an example of a difference equation in which dichotomous behavior of solutions is not compatible with the signature...

Point fixe d'une application non contractante.

Pierre Gilles Lemarié-Rieusset (2006)

Revista Matemática Iberoamericana

We study a multilinear fixed-point equation in a closed ball of a Banach space where the application is 1-Lipschitzian: existence, uniqueness, approximations, regularity.

Point interactions in Lp .

W. Gaspers, P. Clément (1993)

Semigroup forum

Pole-factorization theorem in quantum electrodynamics

Henry P. Stapp (1996)

Annales de l'I.H.P. Physique théorique

Positive almost periodic solutions of non-autonomous delay competitive systems with weak allee effect.

Li, Yongkun, Zhao, Kaihong (2009)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Positive fixed point of strict set contraction operators on ordered Banach spaces and applications.

Feng, Meiqiang, Zhang, Xuemei, Ge, Weigao (2010)

Abstract and Applied Analysis

Positive periodic solutions for a predator-prey model with time delays and impulsive effect.

Gao, Shan, Li, Yongkun (2008)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Positive periodic solutions for an impulsive ratio-dependent predator-prey system with delays.

Liu, Yan, Wang, Quanyi (2008)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Positive periodic solutions for Liénard type $p$ -Laplacian equations.

Meng, Junxia (2009)

Electronic Journal of Differential Equations (EJDE) [electronic only]

Positive periodic solutions in neutral nonlinear differential equations.

Raffoul, Y. (2007)

Electronic Journal of Qualitative Theory of Differential Equations [electronic only]

Positive solution of singular boundary value problem for a nonlinear fractional differential equation.

Wang, Changyou, Wang, Ruifang, Wang, Shu, Yang, Chunde (2011)

Boundary Value Problems [electronic only]

Positive solution to a singular $(k, n - k)$ conjugate boundary value problem

Qingliu Yao (2011)

Mathematica Bohemica

Positive solution to nonzero boundary values problem for a coupled system of nonlinear fractional differential equations.

Wang, Jinhua, Xiang, Hongjun, Liu, Zhigang (2010)

International Journal of Differential Equations

Positive solutions and eigenvalue intervals of a nonlinear singular fourth-order boundary value problem

Qingliu Yao (2013)

Applications of Mathematics

We consider the classical nonlinear fourth-order two-point boundary value problem $\{\begin{matrix} u^{(4)} (t) = λ h (t) f (t, u (t), u^{'} (t), u^{''} (t)), 0 < t < 1, \\ u (0) = u^{'} (1) = u^{''} (0) = u^{'''} (1) = 0 . \end{matrix}$ In this problem, the nonlinear term $h (t) f (t, u (t), u^{'} (t), u^{''} (t))$ contains the first and second derivatives of the unknown function, and the function $h (t) f (t, x, y, z)$ may be singular at $t = 0$ , $t = 1$ and at $x = 0$ , $y = 0$ , $z = 0$ . By introducing suitable height functions and applying the fixed point theorem on the cone, we establish several local existence theorems on positive solutions and obtain the corresponding eigenvalue intervals.

Positive solutions and eigenvalue intervals of a singular third-order boundary value problem

Qingliu Yao (2011)

Annales Polonici Mathematici

This paper studies positive solutions and eigenvalue intervals of a nonlinear third-order two-point boundary value problem. The nonlinear term is allowed to be singular with respect to both the time and space variables. By constructing a proper cone and applying the Guo-Krasnosel'skii fixed point theorem, the eigenvalue intervals for which there exist one, two, three or infinitely many positive solutions are obtained.

Currently displaying 21 – 40 of 79

Previous Page 2 Next

Displaying 21 – 40 of 79

Plus-operators in Krein spaces and dichotomous behavior of irreversible dynamical systems with discrete time

Point fixe d'une application non contractante.

Point interactions in Lp .

Pole-factorization theorem in quantum electrodynamics

Positive almost periodic solutions of non-autonomous delay competitive systems with weak allee effect.

Positive fixed point of strict set contraction operators on ordered Banach spaces and applications.

Positive periodic solutions for a predator-prey model with time delays and impulsive effect.

Positive periodic solutions for an impulsive ratio-dependent predator-prey system with delays.

Positive periodic solutions for Liénard type $p$ -Laplacian equations.

Positive periodic solutions in neutral nonlinear differential equations.

Positive solution of singular boundary value problem for a nonlinear fractional differential equation.

Positive solution to a singular $(k, n - k)$ conjugate boundary value problem

Positive solution to nonzero boundary values problem for a coupled system of nonlinear fractional differential equations.

Positive solutions and eigenvalue intervals of a nonlinear singular fourth-order boundary value problem

Positive solutions and eigenvalue intervals of a singular third-order boundary value problem

Positive solutions for a class of coupled system of singular three-point boundary value problems.

Positive solutions for a class of fourth-order boundary value problems in Banach spaces.

Positive solutions for a class of quasilinear singular equations.

Positive solutions for a high-order multi-point boundary-value problem in Banach spaces.

Positive solutions for a second-order system with integral boundary conditions.

Currently displaying 21 – 40 of 79