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What packages will let me use Cyrillic characters in math mode?
Is there any way to get these letters in the same way as the Greek ones? So with \theta, etc?
I have looked around and all I found was compatibility with Russian keyboards, but I don't have one of those.
Edit:
Solved it!, any char can be represented by this code. It works in both text and equations.
\usepackage[OT2,T1]{fontenc}
\newcommand\textcyr[1]{{\fontencoding{OT2}\fontfamily{wncyr}\selectfont #1}}
\newcommand\Zhe{ \text{\textcyr{Zh}}}
\newcommand\zhe{ \text{\textcyr{zh}}}
Leaving this here for future generations.
I'll self answer as soon as I can (not enough rep to do it now, if someone could help, I will vote you up :p)