71.21 MatrixDecompositionMatrix

MatrixDecompositionMatrix(d)

qqqqReturns the GAP matrix corresponding to the Specht decomposition matrix d. The rows and columns of d are ordered by H.Ordering.

gap> MatrixDecompositionMatrix(DecompositionMatrix(Specht(3),5));      
[ [ 1, 0, 0, 0, 0 ], [ 0, 1, 0, 0, 0 ], [ 0, 1, 1, 0, 0 ], 
  [ 0, 0, 0, 1, 0 ], [ 1, 0, 0, 0, 1 ], [ 0, 0, 0, 0, 1 ], 
  [ 0, 0, 1, 0, 0 ] ]

See also DecompositionMatrix DecompositionMatrix and DecompositionMatrixMatrix DecompositionMatrixMatrix. This function requires the package ``specht'' (see RequirePackage).

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