In this work, we establish a vector version of fixed point theorem of cone compression and
expansion for an expansive operator with constant h > 1 perturbed by a k-set contraction …

In this paper, we investigate a BVP for a class impulsive fractional partial differential
equations. We propose a new topological approach to prove the existence of at least one …

This paper devoted to research a classical solutions for a range of two-dimensional
problems associated with the propagation of nonlinear waves subjected with a class of initial …

Weakly sufficient conditions that guarantee the existence of positive bounded solutions are
obtained for the equation:\left (p\left (u^ ′ (t)\right)\right)^ ′+ f (u (t))= θ, 0< t< 1, subject to …

The purpose of this work is to establish an extension of a Bai-Ge type multiple fixed point
theorem for a sum of two operators. The arguments are based upon recent fixed point index …

In this paper, we investigate a class of Volterra integral equations for existence of global
classical solutions. We give conditions under which the considered equations have at least …

We study a class of Hamilton-Jacobi equations and a class of incompressible Navier-Stokes
equations. A new topological approach is applied to prove the existence of at least one and …

Two nonnegative solutions for two-dimensional nonlinear wave equations Page 1 CUBO, A
Mathematical Journal Vol. 24, no. 03, pp. 393–412, December 2022 DOI: 10.56754/0719-0646.2403.0393 …

1 Introduction and relevance of the topic Page 1 Dynamics of Continuous, Discrete and Impulsive
Systems Series A: Mathematical Analysis 29 (2022) 403-417 Copyright c 2022 Watam Press …

In this paper we investigate a class of nonlinear integral equations for existence of global
classical solutions. We give conditions under which the considered equations have at least …