Taxicab Norm is Norm

Theorem
The taxicab norm is a norm on the real and complex numbers.

Proof
By P-Norm is Norm, $\norm {\, \cdot \,}_p$ is a norm.

By definition, the taxicab norm is $\norm {\, \cdot \,}_1$.

Therefore, the taxicab norm is a norm.

Also see

 * P-Norm is Norm
 * Euclidean Space is Normed Space