Searcharxiv⌕ Search

arXiv subjects

René Erlin Castillo

Publications and source records attributed to René Erlin Castillo.

2 recordsLinked to original sources

$p$-Laplacian operator with potential in generalized Morrey Spaces

We study some basic properties of generalized Morrey spaces $\mathcal{M}^{p,ϕ}(\R^{d})$. Also, the problem $-\mbox{div}(|\nabla u|^{p-2}\nabla u)+V|u|^{p-2}u=0$ in $Ω$, where $Ω$ is a bounded open set in $\R^d$, and potential $V$ is assumed to be not equivalent to zero and lies in $\mathcal{M}^{p,ϕ}(Ω)$, is studied. Finally, we establish the strong unique continuation for the $p$-Laplace operator in the case $V\in\mathcal{M}^{p,ϕ}(\R^d)$.

math.AP↗

Properties of Multiplication Operators on Köthe spaces

We make an exhaustive study of the properties of multiplication operator $M_u$ acting on Köthe spaces. We characterize the multiplication operators, acting on Köthe spaces, which are: bounded, injective, onto, bijective, Fredholm, compact, with closed range and with range finite. We also study the spectrum, the $n$-power and calculate the essential norm of $M_u$ and we study the algebra of multiplication operators.

math.FA↗