{"schema":"vela.problem-packet.v0.1","problem":551,"statement":"Prove that\\[R(C_k,K_n)=(k-1)(n-1)+1\\]for $k\\geq n\\geq 3$ (except when $n=k=3$).","status":"open","seam":"raw","closureRoutes":[],"obligations":[],"attestations":[],"attempts":[],"velaLean":[],"oeis":[],"generated_note":"derived view; the signed event log is the source of truth (vela check / vela reproduce)"}