plural of inverse matrix

plural of matrix group

(group theory) Any group of invertible matrices over a specified field, with the group operation of matrix multiplication.

(mathematics) A square matrix C with 0 on the diagonal and +1 and −1 off the diagonal, such that CᵀC is a multiple of the identity matrix I.

(linear algebra) For given field F (especially the real numbers), even order 2n and nonsingular skew-symmetric matrix Ω, any 2n×2n matrix M with elements in F such that MᵀΩM = Ω (where Mᵀ denotes the transpose of M).

(linear algebra) A square (n×n) matrix that has fewer than n linearly independent eigenvectors, and is therefore not diagonalisable.

(graph theory) A square n⨯n matrix which describes an undirected graph of n vertices by letting rows and columns correspond to vertices, letting its diagonal elements contain the degrees of corresponding vertices and letting its non-diagonal elements contain either −1 or 0 depending on whether there is or there is not (respectively) an edge connecting the pair of corresponding vertices.

(linear algebra) A square matrix whose columns, considered as vectors, are orthonormal to each other. This implies that the transpose of such a matrix is also its inverse.

A two-dimensional barcode

plural of data matrix