Multiple periodic solutions with prescribed minimal period to second-order Hamiltonian systems
AbstractA new variational method based on Ekeland’s principle is introduced for the existence, localization and multiplicity of periodic solutions of…
not-at-ICTP
Perov type results in gauge spaces and applications to integral systems on semi-axis
AbstractIn this paper we present Perov type fixed point theorems for con-tractive mappings in Gheorghiu’s sense on spaces endowed with…
Nash-type equilibria and periodic solutions to nonvariational systems
AbstractThe paper deals with variational properties of fixed points for contraction-type operators. Undersuitable conditions, the unique xed point of a…
Existence results for systems with coupled nonlocal conditions
AbstractIn this paper an existence theory is developed for first-order differential systems with coupled nonlocal conditions given by Stieltjes integrals.…
On a bounded critical point theorem of Schechter
AbstractA new proof based on Bishop-Phelps’ variational principle is given to a critical point theorem of Schechter for extrema in…
Asymptotic stability for a model of cell dynamics after allogeneic bone marrow transplantation
AbstractThe paper presents stability analysis of steady-states of a dynamic system modeling cell evolution after stem cell transplantation. The border…
Abstract weak Harnack inequality, multiple fixed points and p-Laplace equations
AbstractThis paper presents an abstract theory for the existence, localization and multiplicity of fixed points in a cone. The key…
Moser-Harnack inequality, Krasnoselskii type fixed point theorems in cones and elliptic problems
AbstractThe compression-expansion fixed point theorems of M. A. Krasnoselʹskiĭ have been extensively used as a basic tool for the existence…
Multiple positive solutions of non-local initial value problems for first order differential systems
AbstractThe paper gives a new and natural method for the existence of multiple positive solutions for first order differential systems…
Critical point theorems in cones and multiple positive solutions of elliptic problems
AbstractWe obtain critical point variants of the compression fixed point theorem in cones of Krasnoselskii. Critical points are localized in…