We give necessary and sufficient conditions on a squarefree integer d for there to be non-trivial solutions to x(3) + y(3) = z(3) in Q(root d), conditional on the Birch and Swinnerton-Dyer conjecture. These conditions are similar to those obtained by J. Tunnell in his solution to the congruent number problem.
机构:
Indiana Univ Purdue Univ, Dept Math Sci, 402 N Blackford St, Indianapolis, IN 46202 USAIndiana Univ Purdue Univ, Dept Math Sci, 402 N Blackford St, Indianapolis, IN 46202 USA