Magma code for computing with modular curves by Maarten Derickx and Andrew V. Sutherland. The code in this project has been used for the following research papers:
Gonality of the modular curve X1(N)
Torsion subgroups of elliptic curves over quintic and sextic number fields
copyright (C) 2016 Maarten Derickx, Andrew Sutherland
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see [http://www.gnu.org/licenses/].