counterdiagonal matrix
1Centrosymmetric matrix — In mathematics, especially in linear algebra and matrix theory, a centrosymmetric matrix is a matrix which is symmetric about its center. More precisely, an n × n matrix A = [ Ai,j ] is centrosymmetric when its entries satisfy Ai,j = An−i+1,n−j+1 …
2Main diagonal — In linear algebra, the main diagonal (sometimes leading diagonal or major diagonal or primary diagonal or principal diagonal) of a matrix A is the collection of entries Ai,j where i is equal to j. The main diagonal of a square matrix is the… …
3antidiagonal — noun The diagonal of a matrix that leads from top right towards bottom left Syn: counterdiagonal, secondary diagonal, minor diagonal …
