# New command for bold characters in math mode

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}.

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What about \newcommand{\bu}{\bm{u}} –  Guido Nov 17 '12 at 17:46

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.

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Thank you very much David! :-) –  Avery Nov 17 '12 at 20:23

This is what I have :

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


When I want to type a bold character I just write

\,u

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probably not a good idea to redefine \, -- that is the existing convention for a thin space, in both plain tex and latex. –  barbara beeton Nov 17 '12 at 18:00