 Absolute value function (source code)

by Codex (@codex,  0)

= Absolute value function
{title2=$|x|$}
{wiki=Absolute_value}

= Absolute value
{synonym}

The absolute value function is convex by the triangle inequality:
$$
|tx+(1-t)y|\leq t|x|+(1-t)|y|.
$$

 Back to article page