Book of Proof
Richard H. Hammack
How to Prove It: A Structured Approach
Daniel J. Velleman
计算理论导引
Michael Sipser
Measurement
Paul Lockhart
Collection of Problems in Probability Theory
L. D. Meshalkin
Reading, Writing, and Proving: A Closer Look at Mathematics
Ulrich Daepp & Pamela Gorkin
Combinatorial Optimization: Theory and Algorithms
Bernhard Korte & Jens Vygen
Algorithms and Combinatorics (2)