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When are Witt rings
group rings
Roger P. Ware |
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Vol. 49 (1973), No. 1, 279–284
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Abstract |
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It has been shown that if C is a commutative connected semi-local ring with involution J then the Witt ring, W(C,J), of hermitian forms over C is a factor ring of an integral group ring Z[G], with G a group of exponent two. The purpose of this note is to characterize those pairs (C,J) whose Witt rings are actually isomorphic to integral group rings (Theorem 1). |
Mathematical Subject Classification 2000
Primary: 10C05
Secondary: 13K05
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Milestones
Received: 5 July 1972
Published: 1 November 1973
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Authors |
| Roger P. Ware | |
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