Decomposition matrix
id:
decomposition-matrix-268-18242355
title:
Decomposition matrix
text:
In mathematics, and in particular modular representation theory, a decomposition matrix is a matrix that results from writing the irreducible ordinary characters in terms of the irreducible modular characters, where the entries of the two sets of characters are taken to be over all conjugacy classes of elements of order coprime to the characteristic of the field. All such entries in the matrix are non-negative integers. The decomposition matrix, multiplied by its transpose, forms the Cartan matr
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encyclopedia
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original url:
https://en.wikipedia.org/wiki/Decomposition_matrix
date created:
date modified:
2023-12-06T00:42:23Z
main entity:
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