Matrix determinant @return determinant

Determinant @return det(A) @throws IllegalArgumentException Matrix must be square

Make a one-dimensional column packed copy of the internal array. @return Matrix elements packed in a one-dimensional array by columns.

Return pivot permutation vector as a one-dimensional double array @return (double) piv

Return lower triangular factor @return L

Return pivot permutation vector @return piv

Make a one-dimensional row packed copy of the internal array. @return Matrix elements packed in a one-dimensional array by rows.

Return upper triangular factor @return U

LU Decomposition @return LUDecomposition @see LUDecomposition

A = A - B @param B another matrix @return A - B

One norm @return maximum column sum.

Infinity norm @return maximum row sum.