Existence of strong solutions for a class of nonlinear partial differential equations satisfying nonlinear boundary conditions
Existence of symmetric positive solutions for an -point boundary value problem.
Existence of the fundamental solution of a second order evolution equation
We give sufficient conditions for the existence of the fundamental solution of a second order evolution equation. The proof is based on stable approximations of an operator A(t) by a sequence of bounded operators.
Existence of the smallest selfadjoint extension
Existence of three positive periodic solutions for differential systems with feedback controls on time scales.
Existence of three solutions for a higher-order boundary-value problem.
Existence of time averages from the topological point of view
Existence of weak solutions for nonlinear elliptic systems on .
Existence of weak solutions for nonlinear systems involving several -Laplacian operators.
Existence of zeros for operators taking their values in the dual of a Banach space.
Existence of zeros via disconnectedness.
Existence principle for advanced integral equations on semiline.
Existence principles for inclusions of Hammerstein type involving noncompact acyclic multivalued maps.
Existence Principles for Singular Vector Nonlocal Boundary Value Problems with -Laplacian and their Applications
Existence principles for solutions of singular differential systems satisfying nonlocal boundary conditions are stated. Here is a homeomorphism onto and the Carathéodory function may have singularities in its space variables. Applications of the existence principles are given.
Existence problems for homoclinic solutions.
Existence result of generalized vector quasiequilibrium problems in locally -convex spaces.
Existence results for a class of semilinear degenerate elliptic equations
We prove existence results for the Dirichlet problem associated with an elliptic semilinear second-order equation of divergence form. Degeneracy in the ellipticity condition is allowed.
Existence results for a class of semi-linear evolution equations.
Existence results for a second-order abstract Cauchy problem with nonlocal conditions.
Existence results for boundary value problems for fourth-order differential inclusions with nonconvex valued right hand side
In this paper a fixed point theorem due to Covitz and Nadler for contraction multivalued maps, and the Schaefer’s theorem combined with a selection theorem due to Bressan and Colombo for lower semicontinuous multivalued operators with decomposables values, are used to investigate the existence of solutions for boundary value problems of fourth-order differential inclusions.