"TM" == Timothy Murphy writes: >> e.g. Shafarevich groups in algebraic geometry are often denoted >> with capital cyrillic letter sha - not only in russian literature! [...] TM> But my serious point is that it seems to me more sensible to use TM> a macro-name like \shaf rather than arranging for a single input TM> character to create this output. if the document input encoding is ascii or some latin-based (e.g. iso-8859-1), then this is indeed more sensible (no other way), but if the input encoding is cyrillic (e.g. koi8-r) or UTF-8, then it may be more natural to just use the keyboard character (cyrillic letter sha) for that. (with the mathtext package, it will work) Best, v.