MathPHP\LinearAlgebra\Vector::l1Norm PHP 메소드

https://en.wikipedia.org/wiki/Norm_(mathematics)#Taxicab_norm_or_Manhattan_norm |x|₁ = ∑|xᵢ|

public l1Norm ( ) : number
리턴	number

    public function l1Norm()
    {
        return array_sum(Map\Single::abs($this->A));
    }

Vector