{"event":{"id":"evt-hist-2026phase29-treeability-jkl-preprint","dedupe_key":"mathematics_preprint_submission:2026-10-06:chen-tserunyan-and-tucker-drob-submit-finite-index-treeability-proof-preprint","event_type":"mathematics_preprint_submission","title":"Chen Tserunyan and Tucker-Drob submit finite-index treeability proof preprint","summary":"Authors submitted Oct 6 a proof claim that finite-index extensions of countable Borel treeable equivalence relations remain treeable, answering a Jackson-Kechris-Louveau question. arXiv submission is not external peer review or verified AI authorship.","occurred_at":"2026-10-06T00:00:00.000Z","published_at":"2026-10-06T00:00:00.000Z","observed_at":"2026-10-18T08:45:00.000Z","reconstructed_at":"2026-10-18T08:45:00.000Z","ingest_type":"historical_backfill","locations":null,"status":"verified","confidence":0.87,"metadata":{"global_canonical_novelty_not_proven":1,"no_unproven_outcomes":1,"original_index_position":1074,"publication_milestone_only":1},"created_at":"2026-10-19T05:56:44.047Z","updated_at":"2026-10-19T05:56:44.047Z"},"artifacts":[{"id":"art-hist-2026phase29-treeability-jkl-preprint","dedupe_key":"c22eb67688b49e74a44c67ee5726cb4452d032c2ed38b14b6b0cc5389f579c6f","canonical_url":"https://arxiv.org/abs/2610.08986","evidence_locator":"","artifact_type":"source_publication","title":"Chen Tserunyan and Tucker-Drob submit finite-index treeability proof preprint","summary":"","creator_entities":[],"released_at":"2026-10-06T00:00:00.000Z","content_hash":null,"metadata":[],"created_at":"2026-10-19T05:56:44.047Z","updated_at":"2026-10-19T05:56:44.047Z","relation":"documented_by"}],"signals":[]}