Download A Path to Combinatorics for Undergraduates by Titu Andreescu (.PDF)
A Path to Combinatorics for Undergraduates: Counting Strategies by Titu Andreescu, Zuming FengRequirements: .PDF reader, 17 MBOverview: This unique approach to combinatorics is centered around unconventional, essay-type combinatorial examples, followed by a number of carefully selected, challenging problems and extensive discussions of their solutions. Topics encompass permutations and combinations, binomial coefficients and their applications, bijections, […]