Instruct: Classify the given review into positive or negative sentiment.
Query: Good Reference for the abstract based mathmatican

The reference covers many topics covered in higher mathmatics. Extensive list of definitions, theorems, formulas for many topics in mathematics - algebra, discrete, analysis, geometry, continous mathematics, many classifications for functions, and statistics. Some of the higher advanced topics include graph theory, abstract mathematics and differential geometry. The material presented is geared towards the serious mathematican than an undergraduate student or basic math user (why 4 star rating). For an undergraduate student, buy Handbook of Mathematics and Computational Science. If you are still interested in exploring mathematics, buy the book!!