This buffer is for notes you don't want to save, and for Lisp evaluation. If you want to create a file, visit that file with C-x C-f, then enter the text in that file's own buffer. Dear John and Barry, In Table 1 of Cremona-Mazur it says that there is no F corresponding to E=2932A. According to your tables, 1466B has rank 2 and satisfies a 3-congruence with 2932A, so perhaps it should be listed along with the footnote "(1)"? 2932 A - 0 2 2 6 2 2 4 6 -6 4 -6 -6 (a_p) 1466 B - -3 -4 -4 -6 -4 -7 1 0 0 1 -9 -3 1466 B 1 [1,-1,1,-42,105] rk=2, torsion=1 I noticed this when looking for the higher dimensional factors of J_0(2932) satisfying a 3 congruence with 2932A. Best, William