New command for bold characters in math mode

Question

I am using bold characters u,v,w,x in math mode. Is there a way to make a new command for that? Now I always have to type \bm{u}.

Answer 1

You can go

\bmdefine\bu{u}

then use \bu instead of \bm{u} this is a bit quicker than using \bm every time as it only has to work out the corresponding bold font once. (That wouldn't be the case if you used \newcommand\bu{\bm{u}} which would expand to doing \bm every tine.

Answer 2

This is what I have :

\def\,#1{\mathbf{#1}}

When I want to type a bold character I just write

\,u