On the point spectrum of positive operators
On the point spectrum of positive operators
1. Recently, G.-C. Rota proved the following result: Let (S, 2, ,u) be a measure space of finite measure, P a positive linear operator on L1(S, 2, ,u) with Li-norm and L.-norm at most one. If a, I afI = 1, is an eigenvalue of P such that af =Pf …