5 research outputs found
On a characterization of the essential spectra of the sum and the product of two operators
Get PDFAbstractIn this paper, we consider the sum and the product of two operators acting on a Banach space and we present some new and quite general conditions to investigate their Wolf, Schechter and Browder essential spectra
On a Riesz basis of finite-dimensional invariant subspaces and application to Gribov operator in Bargmann space
No full textCase report : functional analysis of the p.Arg507Trp variant of the PIGT gene supporting the moderate epilepsy phenotype of mutations in the C-terminal region
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