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Near-algebra和Banach代数上的特征值和不动点定理(英文)

The Eigenvalue and Fixed-point Theorem on Near-algebra and Banach Algebra
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摘要 在near-algebra和Banach代数中引入(p,q)-可加自映象f和正则可逆元的概念,得到如下的结果:在一定条件下,对于定义在near-algebra或Banach代数X中(p,q)-可加自映象f,X中的任意正则可逆元都具有公共的特征值λ=2q/(1+q),p=q≠-1.其特例就是当λ=2q/(1+q)=1时,X中的任意正则可逆元都是(p,q)-可加自映象f的不动点. Let a (p, q)-additive selfmap f on near-algebra or Banach algebra X satisfy f( e ) = e and f( u ) = Ф( u ). f( u ^-1 ) φ ( u ) where Ф X→X and φ : X→DES (X) be an automorphism and antiautomorphism respectively such that Ф (u) = uφ (u^-1) u for each invertible u of X. Then the selfmap f has the common eigenvalue and fixed point all of the normal invertibles of X.
作者 杨汉生
出处 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第5期982-985,共4页 Journal of Sichuan University(Natural Science Edition)
关键词 near-algebra BANACH代数 自同构 反自同构 正则可逆 特征值 不动点 near-algebra Banach algebra automorphism antiautomorphism normal invertible eigenvalue fixed point
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