e-sygoing.link — Open Problems https://e-sygoing.link Latest links in the Open Problems category en-us Wed, 10 Jun 2026 07:13:55 -0400 Kirby's Problem List in Low-Dimensional Topology https://e-sygoing.link/link/5290047-kirbys-problem-list-in-low-dimensional-topology Problems list in PostScript format. Wed, 05 Nov 2025 13:09:53 -0500 https://e-sygoing.link/go/5290047 Thrackle.org https://e-sygoing.link/link/5290048-thrackleorg John Conway's Thrackle Conjecture: a compilation of what is known about the question. Sun, 17 Aug 2025 17:04:29 -0400 https://e-sygoing.link/go/5290048 The Boise Problem Book https://e-sygoing.link/link/5290046-the-boise-problem-book Problems in combinatorial set theory and topology, collected by Marion Scheepers. Thu, 25 Jul 2024 01:40:25 -0400 https://e-sygoing.link/go/5290046