 Willem Abraham Wythoff

Willem Abraham Wythoff, also spelled Willem Abraham Wijthoff, worked on combinatorial game theory and the geometry of polytopes. His1907 modification of Nim became Wythoff's game. His work also included a published proof of the triangle-free graph bound associated with Willem Mantel.^[ref] The game illustrates how a small change to legal moves can replace a binary-arithmetic strategy by one organized through Beatty sequences and the golden ratio. His geometric work concerns the symmetry and construction of higher-dimensional polytopes, rather than only recreational games.

Homepage: www.nieuwarchief.nl/serie5/pdf/naw5-2016-17-4-275.pdf

Willem Abraham Wythoff (1850–1937) was a Dutch mathematician known for his work in number theory and combinatorial geometry. He is best recognized for Wythoff’s sequences, which are infinite sequences generated from certain mathematical processes. One of the most notable contributions was the development of Wythoff's game, a combinatorial game played with piles of stones that has connections to the Fibonacci sequence and other mathematical concepts.