Open Problems


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Dirac's ConjectureDirac✭✭0GeometryDavid Wood
Direct product of reloids is a complete lattice homomorphism✭✭0Algebratigris35711
Direct proof of a theorem about compact funcoidsPorton✭✭0Topologyporton
Directed path of length twice the minimum outdegreeThomassé✭✭✭0Graph Theory » Directed Graphsfhavet
Discrete Logarithm Problem✭✭✭0Theoretical Comp. Sci. » Complexitycplxphil
Distribution and upper bound of mimic numbersBhattacharyya✭✭1Number Theory » Analytic N.T.facility_cttb@i...
Dividing up the unrestricted partitionsDavid S.; Newman✭✭0CombinatoricsDavidSNewman
Divisibility of central binomial coefficientsGraham✭✭1Number Theory » Combinatorial N.T.maxal
Do any three longest paths in a connected graph have a vertex in common? Gallai✭✭0Graph Theoryfhavet
Does the chromatic symmetric function distinguish between trees?Stanley✭✭0Graph Theory » Algebraic G.T.mdevos
Domination in cubic graphsReed✭✭0Graph Theory » Basic G.T.mdevos
Domination in plane triangulationsMatheson; Tarjan✭✭0Graph Theory » Topological G.T.mdevos
Double-critical graph conjectureErdos; Lovasz✭✭0Graph Theory » Coloring » Vertex coloringDFR
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Drawing disconnected graphs on surfacesDeVos; Mohar; Samal✭✭0Graph Theory » Topological G.T. » Crossing numbersmdevos
Durer's ConjectureDurer; Shephard✭✭✭1Geometry » Polytopesdmoskovich
Earth-Moon ProblemRingel✭✭1Graph Theory » Coloring » Vertex coloringfhavet
Easy! Unlimited Candy Crush Saga Golds Lives Go New Cheats Codes✭✭0Algebratigris35711
Easy! Unlimited Dragon City Cheats Generator codes (GLITCH)✭✭0Algebratigris35711
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Edge list coloring conjecture✭✭✭0Graph Theory » Coloring » Edge coloringtchow
Edge Reconstruction ConjectureHarary✭✭✭0Graph Theorymelch
Edge-antipodal colorings of cubesNorine✭✭0Combinatorics » Ramsey Theorymdevos
Edge-Colouring Geometric Complete GraphsHurtado✭✭1GeometryDavid Wood
Edge-disjoint Hamilton cycles in highly strongly connected tournaments.Thomassen✭✭0Graph Theory » Directed Graphs » Tournamentsfhavet
Edge-Unfolding Convex PolyhedraShephard✭✭0GeometryErik Demaine
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Elementary symmetric of a sum of matrices✭✭✭0Algebrarscosa
End-Devouring RaysGeorgakopoulos1Graph Theory » Infinite GraphsAgelos
Equality in a matroidal circumference boundOxley; Royle✭✭0Combinatorics » Matroid TheoryGordon Royle
Erdős-Posa property for long directed cyclesHavet; Maia✭✭0Graph Theory » Directed Graphsfhavet
Erdös-Szekeres conjectureErdos; Szekeres✭✭✭0Geometrymdevos
Erdős–Faber–Lovász conjectureErdos; Faber; Lovasz✭✭✭0Graph Theory » Coloring » Vertex coloringJon Noel
Erdős–Straus conjectureErdos; Straus✭✭1Number TheoryACW
Euler-Mascheroni constant✭✭✭0Number Theory » Analytic N.T.Juggernaut
Even vs. odd latin squaresAlon; Tarsi✭✭✭0Combinatoricsmdevos
Every 4-connected toroidal graph has a Hamilton cycleGrunbaum; Nash-Williams✭✭0Graph Theory » Topological G.T.fhavet
Every metamonovalued funcoid is monovaluedPorton✭✭0Topologyporton
Every metamonovalued reloid is monovaluedPorton✭✭0Topologyporton
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