{"schema":"vela.problem-packet.v0.1","problem":569,"statement":"Let $k\\geq 1$. What is the best possible $c_k$ such that\\[R(C_{2k+1},H)\\leq c_k m\\]for any graph $H$ on $m$ edges without isolated vertices?","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)"}