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Questions related to the Birch and Swinnerton-Dyer conjecture about the vanishing order and first Taylor coefficient of the L-functions of elliptic curves at the point 1.

9 votes

What is the smallest positive integer for which the congruent number problem is unsolved?

Kazuo Matsuno writes (personal communication): "I verified (10 years ago) by using mwrank and magma that E_N:y^2=x^3-N^2x has a non-torsion point if N<=10^6 is congruent to 1,2,3 modulo 8 and the ana …
Kevin Buzzard's user avatar
17 votes
2 answers
2k views

What is the smallest positive integer for which the congruent number problem is unsolved?

The congruent number problem is the problem of figuring out whether a given positive integer $N$ is the area of a right-angled triangle with all side lengths rational. According to Dickson's "History …
Kevin Buzzard's user avatar
40 votes
Accepted

How did Birch and Swinnerton Dyer arrive at their conjecture?

For what it's worth, here are some historical comments. Both Birch and S-D spoke in Cambridge a few weeks ago, on the history of their conjecture. To my surprise, both of them emphasized the role not …
Kevin Buzzard's user avatar