\langle - Tex Command
NAME
\langle - Used to draw left angle bracket symbol.
SYNOPSIS
{ \langle }
DESCRIPTION
\langle command is used to draw left angle bracket symbol.
EXAMPLE
\left\langle
\matrix{a & b\cr c & d}
\right\rangle
$ \left\langle
\matrix{a & b\cr c & d}
\right\rangle $