Gerd Faltings, who proved the Mordell conjecture, wins the Abel Prize(scientificamerican.com) |
Gerd Faltings, who proved the Mordell conjecture, wins the Abel Prize(scientificamerican.com) |
I just learnt that fact from Wikipedia's article on Mordel's conjecture (now Faltings' theorem), was curious whether the theorem could be strengthened to obtain a full proof of Fermat’s Last Theorem (FLT) that is genuinely different from the Taylor–Wiles proof (or its later variants) and so asked an AI (in this case Grok via Twitter).
Grok correctly told me "no it's not possible", but then surfaced (as an aside) a nice expository article on the Taylor–Wiles proof by Faltings from AMS notices in July 1995, which I thought I'd share here:
The line is a breadthless legth.
Mordell conjecture is that only circles or figure contain infinite points, whereas curves with exponents over 3 are finite accumulations.
https://en.wikipedia.org/wiki/Faltings%27_theorem
The reason for the confusion is that a smooth, projective plane curve of degree d has genus (d-1)(d-2)/2, which is 2 or greater starting at d=4. Hence the phrasing in the article, which is missing the “smooth, projective” hypothesis. The equation y = x^4 doesn’t define a smooth curve when extended to the projective plane, because it has a singularity at infinity.