From algebra to number theory, statistics to mechanics, this versatile and completely updated reference takes in all branches of pure and applied mathematics. Features include: • More than 3,200 cross-referenced entries, supported by dozens of explanatory diagrams • Expanded, up-to-date sections on such topics as chaos, fractals, and graph theory • Biographies of more than 200 key figures in mathematics • Comprehensive coverage of subjects taught in both high school and college