I'm mathematician and my primary occupation in Wikipedia is to translate some mathematical articles or modify them from english to albanian.See my user page in albanian Wikipedia [1]
Mathworld | Encyclopedia of Mathematics | Mathematisches Lexikon |
PlanetMath | OEIS | Plouffe's inverter |
MacTutor | Cut the Knot | ETC |
Matroids Matheplanet | FreeMath | Stanford Encyclopedia of Philosophy |