\| - Tex Command

NAME

\| - double pipe character; double vertical bar; norm.

SYNOPSIS

{ \| }

DESCRIPTION

\| is used as double pipe character; double vertical bar; norm;It acts as non-stretchy when used alone; stretchy when used with \left or \right.

EXAMPLES

1. \|x\| 

   $ \|x\| $

2. \|\frac ab\| 

   $ \|\frac ab\| $

3. \left\|\frac ab\right\| 

   $ \left\|\frac ab\right\| $