Martin Aigner

Martin Aigner, who lived from 28 February 1942 to 11 October 2023, was an Austrian mathematician and a professor at the Freie Universitat Berlin from 1974, with interests in combinatorial mathematics and graph theory. He received his doctorate from the University of Vienna. He is best known for the book Proofs from THE BOOK, written with Gunter M. Ziegler and translated into twelve languages, and for the earlier Combinatorial Theory, a Springer text first issued in 1979. His other books include A Course in Enumeration, Discrete Mathematics, Combinatorial Search, Graphentheorie on the four color problem, and Markov's Theorem and 100 Years of the Uniqueness Conjecture. He received the 1996 Lester R. Ford Award of the Mathematical Association of America for his expository article on Turan's graph theorem, and in 2018, jointly with Ziegler, the Leroy P. Steele Prize for Mathematical Exposition.