01
The problem
Let R(3;k) be the minimal n such that if the edges of K_n are coloured with k colours then there must exist a monochromatic triangle. Determine \lim_(k→ ∈fty)R(3;k)^(1/k).
Open since1994source estimate
Last checked2026.07.26Catalog verification
02
Reward offers
Offer 01$250Paul Erdős / Combinatorics Foundation
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