2 problems

Let $\mathcal{A}$ be a unital C-algebra with the invariant basis number property, and let $\mathcal{E}$ be an $n$-rank Banach module over $\mathcal{A}$. For $k\in\mathbb{N}$, write…

Let $G$ be an infinite, finitely generated group. Let $M$ be a Banach space with norm $||\ ||_M$ that is also a left $\C G$-module, and suppose that $G$ acts on $M$ by continuous…