西安毛子科技大学三XIDIAN UNIVERSITYf(a)证: 令 f(a)=(a-a,)"=(a - a)" ..(a - ai-)'i+(a - ai+1)'i+i ...(a -a,)W, = fi(o)V,则W,是f,(o)的值域,:W,是α的不变子空间.又: (α-a,E)"W, =(α-a,E)" f;(o)V=(α- ,E)" f(o)V= f(o)V(2).. (α-a,E)"W, =0.证:令 ( ) ( ) ( ) i i r i f f = − ( ) , W f V i i = 则 Wi 是 f i ( ) 的值域, Wi 是 的不变子空间. 又 ( ) ( ) ( ) i i r r − = − i i i i E W E f V (( ) ( )) ( ) i r = − = i i E f V f V ( ) 0. i r − = i i E W (2) 1 1 1 1 1 1 ( ) ( ) ( ) ( ) , i i s r r r r i i s + + = − − − − − +