摘要
设A是Banach空间X上的标准算子代数,Φ是A上的满射.证明了Φ满足(T-S)R=0■ (Φ(T)-Φ(S))Φ(R)=0当且仅当Φ是同构或共轭同构的倍数;Φ满足(T-S)R+R(T-S)= 0■(Φ(T)-Φ(S))Φ(R)+Φ(R)(Φ(T)-Φ(S))=0当且仅当Φ是同构,反同构,共轭同构,或共轭反同构.
Let A be a standard operator algebra on a Banach space X, and Ф : A → A be a surjective map. It is shown that Ф satisfies that (T- S)R = 0 ←→ (Ф(T) - Ф(S))Ф(R) = 0 for all T, S, R E A if and only if Ф is a scalar multiple of an automorphism or a conjugate automorphism; Ф satisfies that Ф(I) = I and (T - S)R + R(T - S) = 0 ←→ (Ф(T) - Ф(S))Ф(R) + Ф(R)(Ф(T) - Ф(S)) = 0 for all T, S, R ∈A if and only if Ф is an automorphism, or an anti-automorphism, or a conjugate automorphism, or a conjugate anti-automorphism.
出处
《数学年刊(A辑)》
CSCD
北大核心
2008年第5期663-670,共8页
Chinese Annals of Mathematics
基金
国家自然科学基金(No.10471082
No.10771157)
国家自然科学数学天元基金(No.10626043)
山西省青年自然科学基金(No.2006021008)资助的项目.
关键词
零积
约当零积
同构
Zero-products, Jordan zero-products, Automorphisms