Open Problems

Title	Author(s)	Imp.¹	Rec.²	Area » Topic » Subtopic	Posted by
Rainbow AP(4) in an almost equinumerous coloring	Conlon	✭✭	0	Combinatorics	vjungic
Monotone 4-term Arithmetic Progressions	Davis; Entringer; Graham; Simmons	✭✭	0	Combinatorics	vjungic
2-accessibility of primes	Landman; Robertson	✭✭	0	Combinatorics	vjungic
3-accessibility of Fibonacci numbers	Landman; Robertson	✭✭	0	Combinatorics	vjungic
Is Skewes' number e^e^e^79 an integer?		✭✭	0	Number Theory » Analytic N.T.	VladimirReshetnikov
Matching cut and girth		✭✭	0	Graph Theory	w
Finite Lattice Representation Problem		✭✭✭✭	0	Algebra	williamdemeo
Which lattices occur as intervals in subgroup lattices of finite groups?		✭✭✭✭	0	Group Theory	williamdemeo
Waring rank of determinant	Teitler	✭✭	0	Algebra	Zach Teitler
Singmaster's conjecture	Singmaster	✭✭	1	Number Theory » Combinatorial N.T.	Zach Teitler
Reconstruction conjecture	Kelly; Ulam	✭✭✭✭	0	Graph Theory	zitterbewegung
F_d versus F_{d+1}	Krajicek	✭✭✭	0	Logic	zitterbewegung
P vs. NP	Cook; Levin	✭✭✭✭	0	Theoretical Comp. Sci. » Algorithms	zitterbewegung

Open Problem Garden