Open Problems

Open Problems
Collected by Jeff Erickson. Mainly in geometry.
http://compgeom.cs.uiuc.edu/~jeffe/open/

Open Problems from the Geometry Junkyard
Compiled by David Eppstein of the University of California at Irvine.
http://www.ics.uci.edu/~eppstein/junkyard/open.html

The Open Problems Project
A project to record open problems of interest to researchers in computational geometry and related fields.
http://www.cs.smith.edu/~orourke/TOPP/

Steiner Trees
Open Problems with Steiner Trees, maintained by Joe Ganley.
http://ganley.org/steiner/open.html