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From: krab@iesd.auc.dk (Kresten Krab Thorup)
Newsgroups: comp.text.tex
Subject: Re: HELP! How to get bold $ \sigma $ ?
Message-ID: <KRAB.91May31022911@giga.iesd.auc.dk>
Date: 31 May 91 01:29:11 GMT
References: <hong.675614987@galba>
Sender: news@iesd.auc.dk
Organization: Mathematics and Computer Science, University of Aalborg
Lines: 15
In-reply-to: hong@sci.kun.nl's message of 30 May 91 14:49:47 GMT

>>>>> On 30 May 91 14:49:47 GMT, hong@sci.kun.nl (Hong Zhou) said:

Hong> Hi, 
Hong> I have been    trying to get bold $ \sigma $
Hong> with $ {\bf \sigma} $ as well as $ {\boldmath   \sigma} $
Hong> in LaTeX. But they don't work. Does anybody have 
Hong> any idea? Any suggestion is welcome.

Try:

	$ \alpha \mbox{\boldmath$ \sigma $} \tau $

\boldmath should only be used in text (non-math) mode!  :-)

/Kresten Krab Thorup