Overgroups of the diagonal group in the hyperbolic unitary group over a simple Artin ring

E. V. Dybkova

Zapiski Nauchnykh Seminarov POMI, Problems in the theory of representations of algebras and groups. Part 14, Tome 338 (2006), pp. 155-172

Résumé

We consider overgroups of the diagonal subgroup in the hyperbolic unitary group over a simple Artin ring. We have proved that in most cases the lattice of the subgroups in question admits the standard description. In particular, this holds for all infinite rings. In our previous papers the similar result was obtained for fields and skew field.

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