In this article, we study the quartic Diophantine equation x^4+y^4-2z^4-2w^4=0. We find non-trivial integer solutions. Furthermore, we show that when a solution has been found, a series of other solutions can be derived. We do so using two different techniques. The first is a geometric method due to Richmond, while the second involves elliptic curves.
Citation: Notes on Number Theory and Discrete Mathematics
Pub Type: Journals
Diophantine equation, congruent elliptic curve