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Open Problems


Titlesort iconAuthor(s)Imp.¹Rec.²Area » Topic » SubtopicPosted by
Bleach Brave Souls Cheats Generator No Human Verification (Without Surveys)✭✭0Algebratigris35711
Book Thickness of SubdivisionsBlankenship; Oporowski✭✭1Graph TheoryDavid Wood
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Bouchet's 6-flow conjectureBouchet✭✭✭0Graph Theory » Coloring » Nowhere-zero flowsmdevos
Bounding the chromatic number of triangle-free graphs with fixed maximum degreeKostochka; Reed✭✭0Graph Theory » Coloring » Vertex coloringAndrew King
Bounding the on-line choice number in terms of the choice numberZhu✭✭1Graph Theory » Coloring » Vertex coloringJon Noel
Brawlhalla Cheats Generator 2024 (safe and working)✭✭0Algebratigris35711
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Brawlhalla Cheats Generator 2024 Real Working (new method)✭✭0Algebratigris35711
Burnside problemBurnside✭✭✭✭0Group Theorydlh12
Caccetta-Häggkvist ConjectureCaccetta; Häggkvist✭✭✭✭0Graph Theory » Directed Graphsfhavet
Call Of Duty Mobile Cheats Generator 2024 (FREE!)✭✭0Algebratigris35711
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Candy Crush Saga Free Golds Lives Cheats 2024-2024 Edition v9 (Verified)✭✭0Algebratigris35711
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Characterizing (aleph_0,aleph_1)-graphsDiestel; Leader✭✭✭0Graph Theory » Infinite Graphsmdevos
Cheats Candy Crush Saga Golds Lives Generator 2023-2024 (NEW-FREE!!)✭✭0Algebratigris35711
Cheats Free* Sims FreePlay Simoleons Life Points and Social Points Cheats 2024 No Human Verification✭✭0Algebratigris35711
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Choice Number of k-Chromatic Graphs of Bounded OrderNoel✭✭1Graph Theory » Coloring » Vertex coloringJon Noel
Choosability of Graph PowersNoel✭✭1Graph Theory » Coloring » Vertex coloringJon Noel
Chords of longest cyclesThomassen✭✭✭0Graph Theory » Basic G.T. » Cyclesmdevos
Chowla's cosine problemChowla✭✭✭0Number Theorymdevos
Chromatic number of $\frac{3}{3}$-power of graph✭✭0Graph TheoryIradmusa
Chromatic number of associahedronFabila-Monroy; Flores-Penaloza; Huemer; Hurtado; Urrutia; Wood✭✭1GeometryDavid Wood
Chromatic Number of Common GraphsHatami; Hladký; Kráľ; Norine; Razborov✭✭0Graph TheoryDavid Wood
Chromatic number of random lifts of complete graphsAmit✭✭0Graph Theory » Probabilistic G.T.DOT
Circular choosability of planar graphsMohar✭0Graph Theory » Coloring » Homomorphismsrosskang
Circular coloring triangle-free subcubic planar graphsGhebleh; Zhu✭✭0Graph Theory » Coloring » Vertex coloringmdevos
Circular colouring the orthogonality graphDeVos; Ghebleh; Goddyn; Mohar; Naserasr✭✭0Graph Theory » Coloring » Vertex coloringmdevos
Circular flow number of regular class 1 graphsSteffen✭✭0Graph Theory » Coloring » Nowhere-zero flowsEckhard Steffen
Circular flow numbers of $r$-graphsSteffen✭✭0Graph TheoryEckhard Steffen
Clash of Clans Gems Cheats 2023-2024 Edition Hacks (NEW-FREE!!)✭✭0Algebratigris35711
Clash of Clans Gems Cheats without verification (Free)✭✭0Algebratigris35711
Closing Lemma for Diffeomorphism (Dynamical Systems)Charles Pugh✭✭✭✭0TopologyJailton Viana
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Codes Free Star Stable Star Coins Jorvik Coins Cheats 2024 No Human Veryfication!!!✭✭0Algebratigris35711
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Coloring and immersionAbu-Khzam; Langston✭✭✭1Graph Theory » Coloring » Vertex coloringmdevos
Coloring random subgraphsBukh✭✭0Graph Theory » Probabilistic G.T.mdevos
Coloring the Odd Distance GraphRosenfeld✭✭✭0Graph Theory » Coloring » Vertex coloringmdevos
Coloring the union of degenerate graphsTarsi✭✭0Graph Theory » Coloringfhavet
Colouring the square of a planar graphWegner✭✭0Graph Theory » Coloring » Vertex coloringfhavet
Combinatorial covering designsGordon; Mills; Rödl; Schönheim✭0Combinatorics » DesignsPseudonym
Complete bipartite subgraphs of perfect graphsFox✭✭0Graph Theory » Basic G.T.mdevos
Complexity of square-root sumGoemans✭✭0Theoretical Comp. Sci. » Complexityabie
Complexity of the H-factor problem.Kühn; Osthus✭✭0Graph Theory » Extremal G.T.fhavet

Imp.¹: Importance (Low ✭, Medium ✭✭, High ✭✭✭, Outstanding ✭✭✭✭)
Rec.²: Recommended for undergraduates.

Note: Resolved problems from this section may be found in Solved problems.

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