Origami

Computing Veech groups of origamis

Version 2.0.2
Released 2026-04-22

This project is maintained by Sebastian Engelhardt, Pascal Kattler, Pascal Schumann, Hannah Wagmann, Gabriela Weitze-Schmithüsen

GAP Package Origami

Origami is a package for computing the Veech group of square-tiled surfaces which are also known as origamis.

The current version of this package is version 2.0.2, released on 2026-04-22. For more information, please refer to the package manual. There is also a README file.

License: GPL-3.0-or-later

Dependencies

This package requires GAP version 4.12

The following other GAP packages are needed:

Authors

Leo Emmerich, Sebastian Engelhardt, Simon Ertl, Luca Leon Junk, Pascal Kattler, Alexander Rogovskyy, Pascal Schumann, Andrea Thevis, Hannah Wagmann, Gabriela Weitze-Schmithüsen.

Citing

Please, cite this package as

[EEEJKRSTWW26] Emmerich, L., Engelhardt, S., Ertl, S., Junk, L. L., Kattler, P., Rogovskyy, A., Schumann, P., Thevis, A., Wagmann, H. and Weitze-Schmithüsen, G., Origami, Computing Veech groups of origamis, Version 2.0.2 (2026)
(GAP package), https://AG-Weitze-Schmithusen.github.io/Origami/.

You can get more info by typing Cite("Origami"); in the gap prompt.

Feedback

For bug reports, feature requests and suggestions, please use the issue tracker.