BIFLATNESS AND BIPROJECTIVITY OF BANACH ALGEBRAS GRADED OVER A SEMILATTICE

被引：5

作者：

Gronbaek, Niels ^{[1
]}

Habibian, Fereidoun ^{[2
]}

机构：

[1] Univ Copenhagen, Dept Math Sci, DK-2100 Copenhagen O, Denmark

[2] Semnan Univ, Dept Math, Semnan, Iran

来源：

GLASGOW MATHEMATICAL JOURNAL | 2010年 / 52卷

关键词：

AMENABILITY; COHOMOLOGY; HOMOLOGY;

D O I：

10.1017/S0017089510000364

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We give sufficient conditions and necessary conditions for a Banach algebra, which is l(1)-graded over a semi-lattice, to be biflat or biprojective. As an application we characterise biflat and biprojective discrete convolution algebras for commutative semi-groups.

引用

页码：479 / 495

页数：17

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