MathPHP\LinearAlgebra\Matrix::infinityNorm PHP Method

    public function infinityNorm()
    {
        $m = $this->m;
        $‖A‖∞ = array_sum(Map\Single::abs($this->A[0]));
        for ($i = 1; $i < $m; $i++) {
            $‖A‖∞ = max($‖A‖∞, array_sum(Map\Single::abs($this->A[$i])));
        }
        return $‖A‖∞;
    }