GAP Package ModularGroup

This package provides a collection of algorithms for computing with finite-index subgroups of (P)SL(2,Z).

The current version of this package is version 2.0.0, released on 2022-07-14.

• Documentation (HTML)
• Documentation (PDF)
• README

Dependencies

This package requires GAP version 4.5.3

The following other GAP packages are needed:

• GAPDoc >= 1.5
• CTblLib >= 1.2.2

The following additional GAP packages are not required, but suggested:

• Congruence >=1.1.1

Authors

Luca Leon Junk, Gabriela Weitze-Schmithüsen.

Citing

Please, cite this package as

[JW22] Junk, L. L. and Weitze-Schmithüsen, G., ModularGroup, Finite-index subgroups of (P)SL(2,Integers), Version 2.0.0 (2022)
(GAP package), https://ag-weitze-schmithusen.github.io/ModularGroup.

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

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Feedback

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