Re: Problem with math formula

[Paul A. Rubin]

punx120 wrote:
Hello everyone,
I install lyx on a friend's laptop running Mandrake 10.0, the version of 
 lyx is 1.3.4. When he wants to insert math formula, the special sign 
like \sum or \theta doesn't appears graphically, I mean there is only 
sum or theta, etc

On my debian system, running lyx 1.3.5, everything is ok. So I'm 
wondering what may due this problem,

Thanks for your help.
Sylvain
That's usually a sign some screen fonts are missing.  See if this helps: 
http://wiki.lyx.org/LyX/Troubleshooting#latexttf.

-- Paul