## Maximal finite groups of integral $$n \times n$$ matrices and full groups of integral automorphisms of positive quadratic forms (Bravais models).(English)Zbl 0287.20047

### MSC:

 20H15 Other geometric groups, including crystallographic groups 20G30 Linear algebraic groups over global fields and their integers 11H55 Quadratic forms (reduction theory, extreme forms, etc.)