2 citations · 3 across the 3 of their papers we have counts for
3 papers
math.AG2019★ 1 cited
An Algorithm to Find Rational Points on Elliptic Curves Related to the Concordant Form Problem
Hagen Knaf, Erich Selder, Karlheinz Spindler
We derive an efficient algorithm to find solutions to Euler's concordant form problem and rational points on elliptic curves associated with this problem.
math.AG2019★ 2 cited
Explicit transformation of an intersection of two quadrics to an elliptic curve in Weierstrass form
Hagen Knaf, Erich Selder, Karlheinz Spindler
This paper, motivated by problems in Diophantine analysis which can be formulated as problems of finding rational points on the intersection of two quadrics, presents an explicit c…
math.NT2014
On -congruent numbers, rational squares in arithmetic progressions, concordant forms and elliptic curves
Erich Selder, Karlheinz Spindler
The correspondence between right triangles with rational sides, triplets of rational squares in arithmetic succession and integral solutions of certain quadratic forms is well know…