If anyone else wondered about the mentioned LU decomposition, Wikipedia says: > In numerical analysis and linear algebra, lower–upper (LU) decomposition or fac

If anyone else wondered about the mentioned LU decomposition, Wikipedia says: > In numerical analysis and linear algebra, lower–upper (LU) decomposition or factorization factors a matrix as the product of a lower triangular matrix and an upper triangular matrix. > Applications: Solving linear equations, Inverting a matrix, Computing the determinant https://en.wikipedia.org/wiki/LU_decomposition https://en.wikipedia.org/wiki/LU_decomposition