Robert Samal

TypePostAuthorRepliesLast post
Open problemChords of longest cycles mdevos126 weeks 21 hours ago
Open problemDo any three longest paths in a connected graph have a vertex in common? fhavet126 weeks 21 hours ago
Open problemr-regular graphs are not uniquely hamiltonian. Robert Samal31 year 42 weeks ago
Open problem Graceful Tree Conjecture kintali133 years 19 weeks ago
Open problemHedetniemi's Conjecture mdevos54 years 6 weeks ago
Open problemSteinberg's conjecture fhavet17 years 30 weeks ago
forum topicGive us your suggestions! md1711 years 24 weeks ago
Open problemCores of Cayley graphs Robert Samal312 years 6 weeks ago
Open problemStar height problem porton112 years 15 weeks ago
forum topicQuestion about 'solving' something niekeaerts312 years 20 weeks ago
Open problemStrong 5-cycle double cover conjecture arthur812 years 20 weeks ago
Open problemPetersen coloring conjecture mdevos212 years 20 weeks ago
Open problemCharacterizing (aleph_0,aleph_1)-graphs mdevos212 years 20 weeks ago
Open problemBarnette's Conjecture Robert Samal112 years 36 weeks ago
Open problemHirsch Conjecture Robert Samal412 years 40 weeks ago
Open problemComplexity of square-root sum abie512 years 41 weeks ago
Open problemSeymour's Second Neighbourhood Conjecture nkorppi513 years 4 weeks ago
Open problemReal roots of the flow polynomial mdevos213 years 17 weeks ago
Open problemStar chromatic index of complete graphs Robert Samal013 years 21 weeks ago
categorystar coloring Robert Samal013 years 21 weeks ago
categoryedge coloring Robert Samal013 years 21 weeks ago
categoryDvorak, Zdenek Robert Samal013 years 21 weeks ago
Open problemStar chromatic index of cubic graphs Robert Samal013 years 21 weeks ago
Open problemCo-separability of filter objects porton613 years 31 weeks ago
forum topicMaintaining questions in a subject area rybu413 years 32 weeks ago