{"schema":"vela.problem-packet.v0.1","problem":572,"statement":"Show that for $k\\geq 3$\\[\\mathrm{ex}(n;C_{2k})\\gg n^{1+\\frac{1}{k}}.\\]","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)"}