Tensor sum of infinitesimal generators
Abstract
Let $A$ and $B$ be $C^*$-algebras, and let $\delta$ be a derivation on the tensor product $A\otimes B$ endowed with a uniform cross norm. In this paper, we present a decomposition for $\delta$ as $\delta=\Delta \otimes id+ id\otimes
\nabla$, where $id$ stands for the identity operator and $\Delta$ and $\nabla$ are derivations on $A$ and $B$, respectively. We investigate the concept of flow on the tensor product of $C^*$-algebras and some properties of tensor sum are presented.
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