MathDB
Putnam 1961 B7

Source: Putnam 1961

June 17, 2022
PutnamConvergenceSequences

Problem Statement

Given a sequence (an)(a_n) of non-negative real numbers such that an+manama_{n+m}\leq a_{n} a_{m} for all pairs of positive integers mm and n,n, prove that the sequence (ann)(\sqrt[n]{a_n }) converges.