Some posts about NumPHP and the current development
Today I have released NumPHP 1.0.2. I have added the Cholesky decomposition. It factors a matrix into a lower and a upper triangular matrix like the LU Decomposition. The disadvantage is, the Cholesky decomposition works only for symmetric positive definite matrices. The advantage is, it is faster than the LU decomposition and the resulting matrices are L (lower triangular) and LT (transposed of L, upper triangular). This can be helpful to solve systems of linear equations with symmetric positive definite matrices faster.
Jan 16, 2015Today I have released NumPHP 1.0.0-dev7. It contains the possibility to calculate the inverse of an invertible matrix in PHP. With a small example I would like to show how to use this function.
Jan 14, 2015I would like to show some simple examples for matrix and vector arithmetic in PHP with NumPHP.
Jan 03, 2015I have released NumPHP 1.0.0-dev3. With this release I have added the LU decomposition. Now you can factor every matrix in a lower and a upper triangular matrix. And a permutation matrix.
Dec 20, 2014I would like to show, how to solve a system of linear equations in PHP with NumPHP.
Dec 13, 2014