Another Aspect of Triangle Inequality

الملخص EN

We introduce the notion of ψ-norm by considering the fact that an absolute normalized norm on C2 corresponds to a continuous convex function ψ on the unit interval [0,1] with some conditions.

This is a generalization of the notion of q-norm introduced by Belbachir et al.

(2006).

Then we show that a ψ-norm is a norm in the usual sense.