More about the Mathieu group \(M_{22}\). (English) Zbl 0319.20005
MSC:
| 20B25 | Finite automorphism groups of algebraic, geometric, or combinatorial structures |
| 20H15 | Other geometric groups, including crystallographic groups |
| 20C25 | Projective representations and multipliers |
| 05B05 | Combinatorial aspects of block designs |
