

Science Math Combinatorics Graph Theory Open Problems Science Math Combinatorics Graph Theory Open Problems sites OpenProblems.GraphTheory.Combinatorics.Math.sciencenter.work 

Science Math Combinatorics Graph Theory Open Problems Science Math Combinatorics Graph Theory Open Problems sites OpenProblems.GraphTheory.Combinatorics.Math.sciencesites.work 

Graph Coloring Problems Archive for the book "Graph Coloring Problems" by Tommy R. Jensen and Bjarne Toft (Wiley Interscience 1995) , dedicated to Paul ErdÃ¶s. Gives progress and new problems. www.imada.sdu.dk/Research/Graphcol/ 

Graph Theory Open Problems Six problems suitable for undergraduate research projects. dimacs.rutgers.edu/~hochberg/undopen/graphtheory/graphtheory.html 

Open Problems in Graph Algorithms Compiled by Jerry Spinrad. www.vuse.vanderbilt.edu/~spin/open.html 

Past Open Problems Columns By Douglas B. West , from the SIAM Activity Group Newsletter in Discrete Mathematics. www.math.uiuc.edu/~west/pcol/pcolink.html 

Perfect Graphs Conjectures and open problems , maintained at the AIM. www.aimath.org/WWN/perfectgraph/ 

Perfect Problems Unsolved problems on perfect graphs. www.cs.concordia.ca/~chvatal/perfect/problems.html 

Problems in Graph Theory Maintained by Peter Cameron. www.maths.qmw.ac.uk/~pjc/oldprob.html 

Problems in Signed, Gain, and Biased Graphs Compiled by Thomas Zaslavsky. www.math.binghamton.edu/zaslav/Bsg/sgbgprobs.html 

Problems in Topological Graph Theory Web text by Dan Archdeacon with a list of open questions in topological graph theory. www.emba.uvm.edu/~archdeac/newlist/problems.html 

Some Open Problems Open problems and conjectures concerning the determination of properties of families of graphs. www.eecs.umich.edu/~qstout/constantques.html 
