| Department of Computer and Mathematical Sciences | Department of Mathematics |
| University of Toronto Scarborough | University of Toronto |
| 1265 Military Trail | 40 St. George St. |
| Toronto ON M1C 1A4 | Toronto ON M5S 2E4 |
| Canada | Canada |
| (416) 208-4820 | (416) 978-5212 |
A Geometric Realization of the Congruence Subgroup Kernel
Algebra:
A Computational Introduction, Second Edition
Notebooks for Windows