عنوان	Approximate left phi-biprojectivity of certain Banach algebras
نوع پژوهش	مقاله ارائه شده کنفرانسی
کلیدواژه‌ها	Approximate left phi-biprojectivity, Left phi-amenability, Segal algebra, Semigroup algebra, Measure algebra.
چکیده	Let A be a Banach algebra and let  be a non-zero multiplicative linear functional on A: We introduce a new notion of approximate left -biprojectivity for Banach algebra A. We show that for a SIN group G, the Segal algebra S(G) is approximate left 1-biprojective if and only if G is amenable, where 1 is the augmentation character on S(G). Also we show that the measure algebra M(G) is approximate left character biprojective if and only if G is discrete and amenable. For a Cli ord semigroup S, we show that `1(S) is approximate left character biprojective if and only if `1(S) is pseudo-amenable. We study the hereditary property of these notions. Finally we give some examples to show the di erences of these notions and the classical ones.
پژوهشگران	امیر سهامی (نفر اول)، اسحاق الماسی (نفر دوم)، عبدالرسول پورعباس (نفر سوم)