Topological methods for boundary value problems involving discrete vector $\phi$-Laplacians

Cristian Bereanu, Dana Gheorghe

Abstract


In this paper, using Brouwer degree arguments, we prove some
existence results for nonlinear problems of the type
$$
-\nabla[\phi(\Delta x_m)]=g_m(x_m,\Delta x_m) \quad (1\leq m\leq n-1),
$$
submitted to Dirichlet, Neumann or periodic boundary conditions,
where $\phi(x)=|x|^{p-2}x$ $(p> 1)$ or $\phi(x)={x}/{\sqrt{1-|x|^2}}$
and $g_m\colon \mathbb{R}^N\to\mathbb{R}^N$ $(1\leq m\leq n-1)$ are continuous
nonlinearities satisfying some additional assumptions.

Keywords


Boundary value problems; Brouver degree

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