permutation matrix

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permutation matrix

[‚pər·myə′tā·shən ‚mā‚triks]
(mathematics)
A square matrix whose elements in any row, or any column, are all zero, except for one element that is equal to unity.
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Use the permutation matrices to reduce the matrix into a lower triangular matrix.
lambda]]([lambda] = 1 , 2, 3) are all permutation matrices.
Excluded permutation matrices and the Stanley-Wilf conjecture.
This algorithm will give the same scaling independently of the ordering of the inputs and outputs and pre and post compensators that provide both scaling and I/O pairings as indicated by the resulting non-unity permutation matrices.
In [9], we gave a bijection between permutation matrices (which are a subclass of ASMs) and descending plane partitions with no special parts in such a way that the inversion number of the permutation matrix equals the number of parts of the DPP.
R]], and corresponding permutation matrices P, Q, as illustrated in Figure 3.
n] embeds into G as the subgroup of permutation matrices.
It turns out the "LU" factorization of A is obtainable without any floating-point operations, throughout a couple of suitable permutation matrices P and Q (see [31, 12]).
A permutation of the matrix A is factorized into its LU factors, PAQ = LU, where P and Q are permutation matrices chosen to preserve sparsity and maintain numerical accuracy.
One method which seems tempting is to take the permutation matrices [A.
A pivoting strategy that interchanges the rows and/or columns of an n x n matrix A is associated with permutation matrices P, Q such that PAQ = LV, where L is a unit lower triangular matrix (i.
Permutation matrices are used both as input and output to the routines.

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