عنوان	JOHNSON PSEUDO-CONTRACTIBILITY OF CERTAIN BANACH ALGEBRAS AND THEIR NILPOTENT IDEALS
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Johnson pseudo-contractibility, semigroup algebra, approximately complemented ideal.
چکیده	In this paper, we study the notion of Johnson pseudo-contractibility for certain Banach algebras. For a bicyclic semigroup S, we show thatℓ1(S) is not Johnson pseudo-contractible. Also for a Johnson pseudo-contractible Banach algebra A, we show that A has no non-zero complemented closed nilpotent ideal.
پژوهشگران	مهدی عسکری سیاح (نفر اول)، عبدالرسول پورعباس (نفر دوم)، امیر سهامی (نفر سوم)