机构:
Univ Johannesburg, Dept Math & Appl Math, Fac Sci, POB 524, ZA-2006 Auckland Pk, South AfricaQueens Univ Belfast, Math Sci Res Ctr, Belfast BT7 1NN, North Ireland
Schulz, Francois
[2
]
机构:
[1] Queens Univ Belfast, Math Sci Res Ctr, Belfast BT7 1NN, North Ireland
[2] Univ Johannesburg, Dept Math & Appl Math, Fac Sci, POB 524, ZA-2006 Auckland Pk, South Africa
C*-algebras;
tracial states;
Jordan homomorphisms;
invertibility preserving mappings;
SPECTRUM;
TRACE;
D O I:
10.4064/sm230101-27-3
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
We prove that every surjective unital linear mapping which preserves invertible elements from a Banach algebra onto a C*-algebra carrying a faithful tracial state is a Jordan homomorphism, thus generalising Aupetit's 1998 result for finite von Neumann algebras.