On bounded module maps
between Hilbert modules over locally C * -algebras
Acta mathematica Universitatis Comenianae, Tome 74 (2005) no. 1
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Let $A$ be a locally $C^{*}$-algebra and let $E$ be a Hilbert $A$-module. We show that the algebra $B_A(E)$ of all bounded $A$-module maps on $E$ is a locally \hbox{$m$-c}on\-vex algebra which is algebraically and topologically isomorphic to $LM(K_A(E))$, the algebra of all left multipliers of $K_A(E)$, where $K_A(E)$ is the locally $C^{*}$-algebra of all ''compact`` $A$-module maps on $E$. Also we show that $b(B_A(E))$, the algebra of all bounded elements in $B_A(E)$, is a Banach algebra which is isometrically isomorphic to $B_{b(A)}(b(E))$.