On subharmonic solutions for second order difference equations with relativistic operator

Adel Daouas; Ameni Guefrej

doi:10.5269/bspm.62748

Adel Daouas Higher school of sciences and technology, Hammam Sousse, 4011, Hammam Sousse
Ameni Guefrej https://orcid.org/0000-0001-9609-7545

Abstract

The purpose of this paper is to investigate the existence of subharmonic solutions of second-order difference equations with relativistic operator. Our approach is variational and based on the use of the critical point theory for convex, lower semi-continuous perturbations of C$^1$-functionals due to A. Szulkin.

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