On automatic continuity of 3-homomorphisms on Banach algebras

被引:0
|
作者
Bracic, Janko [1 ]
Moslehian, Mohammad Sal [2 ,3 ,4 ]
机构
[1] Univ Ljubljana, Dept Math, Ljubljana 1111, Slovenia
[2] Ferdowsi Univ Mashhad, Dept Math, Mashhad 91775, Iran
[3] Ferdowsi Univ Mashhad, CEAAS, Mashhad 91775, Iran
[4] BMRG, Mashhad, Iran
关键词
3-homomorphism; homomorphism; continuity; Banach algebra; bounded approximate identity; second dual; Arens regularity; C*-algebra;
D O I
暂无
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A linear map phi : A -> B between (Banach) algebras is called 3-homomorphism if phi(abc) = phi(a)phi(b)phi(c) for each a, b, c is an element of A. We investigate 3-homomorphisms on Banach algebras with bounded approximate identities and establish in two ways (for unital and non-unital cases) that every involution preserving homomorphism between C*-algebras is norm decreasing.
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页码:195 / 200
页数:6
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