e-sygoing.link — Open Problems https://e-sygoing.link Latest links in the Open Problems category en-us Mon, 25 May 2026 02:45:38 -0400 Combinatorics Problems https://e-sygoing.link/link/5283565-combinatorics-problems Combinatorics problems selected from math olympiads. Mon, 01 Dec 2025 03:30:40 -0500 https://e-sygoing.link/go/5283565 Problems in Graph Theory and Combinatorics https://e-sygoing.link/link/5283566-problems-in-graph-theory-and-combinatorics A collection maintained by Douglas B. West, of the University of Illinois. Features brief introductions, along with references cited. Topics include matching and independence, connectivity, graph homomorphism and circular coloring. Sat, 02 Aug 2025 19:41:08 -0400 https://e-sygoing.link/go/5283566 Past Open Problems https://e-sygoing.link/link/5283562-past-open-problems From the SIAM Activity Group Newsletter in Discrete Mathematics. In PostScript. Compiled by Douglas B. West. Fri, 13 Jun 2025 22:24:16 -0400 https://e-sygoing.link/go/5283562 Open Problems for Undergraduates https://e-sygoing.link/link/5283561-open-problems-for-undergraduates A collection of open problems in Discrete Mathematics which are currently being researched by members of the DIMACS community. Sat, 10 May 2025 21:47:15 -0400 https://e-sygoing.link/go/5283561