Published online by Cambridge University Press: 20 November 2018
Using the theory of algebraic numbers, Mordell [1] has shown that the Diophantine equation
1
possesses only two solutions in positive integers; these are given by n = 2, m = 1, and n = 14, m = 5. We are interested in positive integer solutions to the generalized equation
2
and in this paper we prove for several choices of k and l that (2) has no solutions, in other cases the only solutions are given, and numerical evidence for all values of k and l for which max (k, l) ≤ 15 is also exhibited.