A NOTE ON OPERATORS ON FINSLER MODULES

  • TAGHAVI, A. (Department of Mathematics University of Mazandaran Babolsar) ;
  • JAFARZADEH, JAFARZADEH (Department of Mathematics University of Mazandaran Babolsar)
  • 투고 : 2006.09.04
  • 발행 : 2006.12.31

초록

let E be a Finsler modules over $C^*$-algebras. A with norm-map $\rho$ and L(E) set of all A-linear bonded operators on E. We show that the canonical homomorphism ${\phi}:L(E){\rightarrow}L(E_I)$ sending each operator T to its restriction $T|E_I$ is injective if and only if I is an essential ideal in the underlying $C^*$-algebra A. We also show that $T{\in}L(E)$ is a bounded below if and only if ${\mid}{\mid}x{\mid}{\mid}={\mid}{\mid}{\rho}{\prime}(x){\mid}{\mid}$ is complete, where ${\rho}{\prime}(x)={\rho}(Tx)$ for all $x{\in}E$. Also, we give a necessary and sufficient condition for the equivalence of the norms generated by the norm map.

키워드