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Mathematics of Computation

Published by the American Mathematical Society, the Mathematics of Computation (MCOM) is devoted to research articles of the highest quality in all areas of pure and applied mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.98.

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Computing the discriminants of Brauer’s centralizer algebras
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by Phil Hanlon and David Wales PDF
Math. Comp. 54 (1990), 771-796 Request permission

Abstract:

This paper discusses a computational problem arising in the study of the structure theory of Brauer’s orthogonal and symplectic centralizer algebras. The problem is to compute the ranks of certain combinatorially defined matrices ${Z_{m,k}}(x)$ (these matrices are presented in $\S 2$). This computation is difficult because the sizes of the matrices ${Z_{m,k}}(x)$ are enormous even for small values of m and k. However, there is a great deal of symmetry amongst the entries of the matrices. In this paper we show how to design algorithms that take full advantage of this symmetry, using the representation theory of the symmetric groups. We also present data collected using these algorithms and a number of conjectures about the centralizer algebras.
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Additional Information
  • © Copyright 1990 American Mathematical Society
  • Journal: Math. Comp. 54 (1990), 771-796
  • MSC: Primary 20G20; Secondary 20C30
  • DOI: https://doi.org/10.1090/S0025-5718-1990-1010599-4
  • MathSciNet review: 1010599