Hypergraphs

subject tag · 5 problems

Title Source Status Imp. Posted
Ryser's conjecture opg partial ★★★ 2007-03-19
Simultaneous partition of hypergraphs opg open ★★ 2013-03-06
Turán's problem for hypergraphs opg open ★★ 2013-03-12
Frankl's union-closed sets conjecture opg partial ★★ 2008-09-25
¿Are critical k-forests tight? opg disproved ★★ 2007-09-01