MathDB

27

Part of PEN H Problems

Problems(1)

H 27

Source:

5/25/2007
Prove that there exist infinitely many positive integers nn such that p=nrp=nr, where pp and rr are respectively the semi-perimeter and the inradius of a triangle with integer side lengths.
geometryperimeterinradiusmodular arithmeticDiophantine Equations