%0 Journal Article %T \phi-Amenable and \phi-biflat Banach algebras %J Bulletin of the Iranian Mathematical Society %I Iranian Mathematical Society (IMS) %Z 1017-060X %A Ghorbani, Z. %A Lashkarizadeh Bami, M. %D 2013 %\ 07/01/2013 %V 39 %N 3 %P 507-515 %! \phi-Amenable and \phi-biflat Banach algebras %K Banach algebra %K ph-biat %K ph-amenable %R %X In this paper we study the concept of ph-biatness ofa Banach algebra A, where ph is a continuous homomorphism on A.We prove that if ph is a continuous epimorphism on A and A hasa bounded approximate identity and A is ph- biat, then A is ph-amenable. In the case where ph is an isomorphism on A we showthat the ph- amenability of A implies its ph-biatness. %U http://bims.iranjournals.ir/article_426_7cc478cf8c3e322dd9f487c878ba4cfc.pdf