西要毛子律技大学XIDIAN UNIVERSITY： 有多项式u(a),v(a)，使u(a)f.(a)+v(a)(a-2,)" = 1从而u(α)f;(α)+v(α)(α- a,E)" = E:: β, = E(β,) = (u(o)f;(o)+ v(o)(α-a,E)")(β,)= u(o)(f;(o)(β,)) + v(o)(α - ^,E)"(β)= u(α)(0) + v(o)(0) = 0, i = 1,2,.",s.所以 V+V2+.+V,是直和( ) ( ) ( )( ) 1 i r u f v      i i + − = = + = = u v i s ( )(0) ( )(0) 0, 1,2, , .   ( ) ( )( ) ( ) ( ) ( ) ( ) ( ) i r = + − u f v E        i i i i ( ) ( ) ( ) ( )( ) ( ) ( ) i r  = = + −         i i i i i E u f v E 从而 ( ) ( ) ( )( ) i r u f v E E      i i + − = 所以 V V V 1 2 + + + s 是直和. ∴ 有多项式 u v ( ), ( )   ，使