Robert Samal

TypePostAuthorRepliesLast post
Open problemChords of longest cycles mdevos135 weeks 4 days ago
Open problemDo any three longest paths in a connected graph have a vertex in common? fhavet135 weeks 4 days ago
Open problemr-regular graphs are not uniquely hamiltonian. Robert Samal32 years 7 hours ago
Open problem Graceful Tree Conjecture kintali133 years 29 weeks ago
Open problemHedetniemi's Conjecture mdevos54 years 15 weeks ago
Open problemSteinberg's conjecture fhavet17 years 40 weeks ago
forum topicGive us your suggestions! md1711 years 34 weeks ago
Open problemCores of Cayley graphs Robert Samal312 years 16 weeks ago
Open problemStar height problem porton112 years 25 weeks ago
forum topicQuestion about 'solving' something niekeaerts312 years 30 weeks ago
Open problemStrong 5-cycle double cover conjecture arthur812 years 30 weeks ago
Open problemPetersen coloring conjecture mdevos212 years 30 weeks ago
Open problemCharacterizing (aleph_0,aleph_1)-graphs mdevos212 years 30 weeks ago
Open problemBarnette's Conjecture Robert Samal112 years 45 weeks ago
Open problemHirsch Conjecture Robert Samal412 years 49 weeks ago
Open problemComplexity of square-root sum abie512 years 51 weeks ago
Open problemSeymour's Second Neighbourhood Conjecture nkorppi513 years 13 weeks ago
Open problemReal roots of the flow polynomial mdevos213 years 26 weeks ago
Open problemStar chromatic index of complete graphs Robert Samal013 years 31 weeks ago
categorystar coloring Robert Samal013 years 31 weeks ago
categoryedge coloring Robert Samal013 years 31 weeks ago
categoryDvorak, Zdenek Robert Samal013 years 31 weeks ago
Open problemStar chromatic index of cubic graphs Robert Samal013 years 31 weeks ago
Open problemCo-separability of filter objects porton613 years 40 weeks ago
forum topicMaintaining questions in a subject area rybu413 years 41 weeks ago