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Conjugacy classes of symmetries
in orthogonal groups

Author: Donald G. James
Journal: Proc. Amer. Math. Soc. 125 (1997), 747-753
MSC (1991): Primary 11E57, 11F06, 20G30
MathSciNet review: 1416090
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Abstract: The number of conjugacy classes of symmetries in the integral orthogonal group of an indefinite $\Bbb Z$-lattice is determined. The results are applied to the extended Bianchi groups.

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Additional Information

Donald G. James

Received by editor(s): October 18, 1995
Additional Notes: The author was supported by NSA grant MDA904-94-H-2034 and NSF grant DMS-95-00533.
Communicated by: Ronald M. Solomon
Article copyright: © Copyright 1997 American Mathematical Society