semi-norm (suomeksi)

Määritelmät:

(lb, en, analysis) A function denoted , , ''v'', , that maps a vector ''v'' to a non-negative value such that , , ''cv'', , = , ''c'', ., , ''v'', , , where ''c'' is a scalar, and , , ''v'' + ''w'', , ≤ , , ''v'', , + , , ''w'', , (the triangle inequality); the condition that , , ''v'', , = 0 implies that ''v'' = 0 is not required, but when it holds, the semi-norm is a norm.