MathDB
Basically a graph

Source: BMO Shortlist 2022, C3

May 13, 2023
combinatoricsAZE EGMO TSTAZE BMO TST

Problem Statement

Find the largest positive integer kk{} for which there exists a convex polyhedron P\mathcal{P} with 2022 edges, which satisfies the following properties:
[*]The degrees of the vertices of P\mathcal{P} don’t differ by more than one, and [*]It is possible to colour the edges of P\mathcal{P} with kk{} colours such that for every colour cc{}, and every pair of vertices (v1,v2)(v_1, v_2) of P\mathcal{P}, there is a monochromatic path between v1v_1 and v2v_2 in the colour cc{}.
Viktor Simjanoski, Macedonia