M. Abkari

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Articles: 1

Essential Descent Spectrum Equality

Mbark Abkari, Hamid Boua, Abdelaziz Tajmouati

MFAT 30 (2024), no. 3-4, 101-104

101-104

A bounded operator $T$ in a Banach space $X$ is said to satisfy the essential descent spectrum equality, if the descent spectrum of $T$ coincides with the essential descent spectrum of $T$. In this note, we give some conditions under which the equality $\sigma_{desc}(T) = \sigma^e_{desc}(T)$ holds for $T$.

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