Invariant subspace theorems for amenable groups
Invariant subspace theorems for amenable groups
In [ 5 ], Ky Fan proved the following remarkable amenability āinvariant subspaceā theorem: Let G be an amenable group of continuous, invertible linear operators acting on a locally convex space E. Let H be a closed subspace of finite codimension n in E and XāE be such that: (i) ā¦