You should check out this online resource for mathematics: http://mathworld.wolfram.com/ http://mathworld.wolfram.com/ If you need a dead tree version, Harper

You should check out this online resource for mathematics: http://mathworld.wolfram.com/ http://mathworld.wolfram.com/ If you need a dead tree version, Harper Collins is coming out with a new edition: http://www.amazon.com/Harper-Collins-Dictionary-Mathematics-Borowski/dp/1439508860/ref=sr_1_8?ie=UTF8&s=books&qid=1220994362&sr=8-8 http://www.amazon.com/Harper-Collins-Dictionary-Mathematics-... I have an older version and it's good for quickly looking up some of the vocabulary, however, it won't give you a deep understanding.