e-sygoing.link — Open Problems https://e-sygoing.link Latest links in the Open Problems category en-us Sun, 24 May 2026 05:48:21 -0400 Perfect Graphs https://e-sygoing.link/link/5283756-perfect-graphs Conjectures and open problems, maintained at the AIM. Sat, 11 Apr 2026 12:12:17 -0400 https://e-sygoing.link/go/5283756 Past Open Problems Columns https://e-sygoing.link/link/5283755-past-open-problems-columns By Douglas B. West, from the SIAM Activity Group Newsletter in Discrete Mathematics. Sun, 04 Jan 2026 00:26:01 -0500 https://e-sygoing.link/go/5283755 Some Open Problems https://e-sygoing.link/link/5283750-some-open-problems Open problems and conjectures concerning the determination of properties of families of graphs. Sun, 09 Mar 2025 19:50:23 -0400 https://e-sygoing.link/go/5283750 Graph Theory Open Problems https://e-sygoing.link/link/5283746-graph-theory-open-problems Six problems suitable for undergraduate research projects. Wed, 06 Nov 2024 18:13:18 -0500 https://e-sygoing.link/go/5283746