MathDB
Putnam 2011 B1

Source:

December 5, 2011
Putnamintegrationinequalitiesfloor functionabsolute valuecollege contestsPutnam analysis

Problem Statement

Let hh and kk be positive integers. Prove that for every ε>0,\varepsilon >0, there are positive integers mm and nn such that ε<hmkn<2ε.\varepsilon < \left|h\sqrt{m}-k\sqrt{n}\right|<2\varepsilon.