INVARIANTLY COMPLEMENTED AND AMENABILITY IN BANACH ALGEBRAS RELATED TO LOCALLY COMPACT GROUPS

被引:0
|
作者
Ghaffari, Ali [1 ]
Amirjan, Somayeh [1 ]
机构
[1] Semnan Univ, Dept Math, POB 35195-363, Semnan, Iran
关键词
Amenability; Banach algebra; group algebra; homomorphism; operator; projection; weak* topology; L-INFINITY G; BOUNDED APPROXIMATE IDENTITIES; SUBSPACES; IDEALS;
D O I
10.1216/RMJ-2017-47-2-445
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this paper, among other things, we show that there is a close connection between the existence of a bounded projection on some Banach algebras associated to a locally compact group G and the existence of a left invariant mean on L-infinity(G). A necessary and sufficient condition is found for a locally compact group to possess a left invariant mean.
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页码:445 / 461
页数:17
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