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math.FA2017★ 1 cited
Johnson pseudo-contractibility of certain Banach algebras and their nilpotent ideals
M. Askari-Sayah, A. Pourabbas, A. Sahami
In this paper, we study the notion of Johnson pseudo-contractibility for certain Banach algebras. For a bicyclic semigroup , we show that is not Johnson pseudo-con…
math.RA2017
The Leavitt Path Algebras of Ultragraphs
M. Imanfar, A. Pourabbas, H. Larki
We introduce the Leavitt path algebras of ultragraphs and we characterize their ideal structures. We then use this notion to introduce and study the algebraic analogous of Exel-Lac…