MathDB
Pythagorean triples

Source: Canada 2005

June 26, 2009
inequalitiesnumber theory unsolvednumber theory

Problem Statement

Let (a,b,c)(a,b,c) be a Pythagorean triple, i.e. a triplet of positive integers with a^2\plus{}b^2\equal{}c^2.
a)a) Prove that \left(\frac{c}{a}\plus{}\frac{c}{b}\right)^2>8. b)b) Prove that there are no integer nn and Pythagorean triple (a,b,c)(a,b,c) satisfying \left(\frac{c}{a}\plus{}\frac{c}{b}\right)^2\equal{}n.