{"schema":"vela.problem-packet.v0.1","problem":212,"statement":"Is there a dense subset of $\\mathbb{R}^2$ such that all pairwise distances are rational?","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)"}