Semi-fredholm and semi-browder spectra for Co-quasi-semigroups
Resumo
In [5] D. Barcenas and H. Leiva are introduced the notion of C0-quasi-semigroups of bounded linear operators, as a generalization of C0-semigroups of operators. In this paper, we shall show the connections between a different spectra of the C0-quasi-semigroups by the spectra of their generators, specially, ascent, descent essential ascent and essential descent, upper and lower semi-Fredholm and semi-Browder spectra.
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