- Classification of finite simple groups | 88, 170, 4
- Classification of finite groups | 77, 357, 6
- Normal subgroup | 149, 554, 8
- Quotient group | 51, 977, 11
- Subgroup | 0, 977, 13
- Group | 0, 1k, 33
- Algebra | 0, 2k, 62
- Mathematics | 17, 13k, 336
- Ciro Santilli's Homepage | 262, 182k, 3k