X-Y-Z matrix

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The term X-Y-Z matrix is used to refer to the generalization of the concept of matrix to three dimensions.

An X-Y-Z matrix A will thus have components Ai,j,k where

1\le i\le M, \ 1\le j \le N, \  1\le k \le P

for some positive integers M,N,P.

Such matrices are helpful for example when considering grids in three dimensions, as in computer simulations of three-dimensional problems.

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