Fundamental domains and noncongruence subgroups
Author(s)
Helena Verrill
Description
- Helena's talk. It gives examples of using the codes.
- A pari file which can be used for drawing simple pictures
of simple domains (but you need to use output from e.g., gap to
know what the domains are. If gives xfig output.
- A gap program for determining whether a matrix is in a group
given by a farey symbol, and if it is the word in terms of generators.
- A gap program also doing above, but by a different method
Last modification: 19 August 2008.