{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:JIRMVG42FWLWYKW2ZDD3V7TVQM","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"a129ad2239819a21fe77badf01113023d3931223cd4af8eb13487b6a3d4c4e72","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-05T20:00:02Z","title_canon_sha256":"1be86dcca59aa7d703c34ece2f1ab2cce21dbc44d8d1e9379b803a005bc4a09b"},"schema_version":"1.0","source":{"id":"1011.1496","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.1496","created_at":"2026-05-18T04:14:47Z"},{"alias_kind":"arxiv_version","alias_value":"1011.1496v3","created_at":"2026-05-18T04:14:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.1496","created_at":"2026-05-18T04:14:47Z"},{"alias_kind":"pith_short_12","alias_value":"JIRMVG42FWLW","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"JIRMVG42FWLWYKW2","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"JIRMVG42","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:c5714e69031e25e5632be6a2652a3ec31130caf289edfba986722ed6a35adf37","target":"graph","created_at":"2026-05-18T04:14:47Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Protoplanetary disks are quasi-steady structures whose evolution and dispersal determine the environment for planet formation. I review the theory of protoplanetary disk evolution and its connection to observations. Substantial progress has been made in elucidating the physics of potential angular momentum transport processes - including self-gravity, magnetorotational instability, baroclinic instabilities, and magnetic braking - and in developing testable models for disk dispersal via photoevaporation. The relative importance of these processes depends upon the initial mass, size and magnetiz","authors_text":"Philip J. Armitage","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-05T20:00:02Z","title":"Dynamics of Protoplanetary Disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.1496","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:88093fa18040fbc92b15939de9cf51926f438f44dc27230b3097812134d16997","target":"record","created_at":"2026-05-18T04:14:47Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"a129ad2239819a21fe77badf01113023d3931223cd4af8eb13487b6a3d4c4e72","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-11-05T20:00:02Z","title_canon_sha256":"1be86dcca59aa7d703c34ece2f1ab2cce21dbc44d8d1e9379b803a005bc4a09b"},"schema_version":"1.0","source":{"id":"1011.1496","kind":"arxiv","version":3}},"canonical_sha256":"4a22ca9b9a2d976c2adac8c7bafe75833827777758cc7815721fa47694d6ea81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a22ca9b9a2d976c2adac8c7bafe75833827777758cc7815721fa47694d6ea81","first_computed_at":"2026-05-18T04:14:47.365596Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:14:47.365596Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"voUXFw/lcBScowpyyWoMPYcjQvgSycdlxuAFvTS9EtaFSgFS0LfThjYbLy+tECvV25Ayjgmbusn5oIJy6gLiBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:14:47.366115Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.1496","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88093fa18040fbc92b15939de9cf51926f438f44dc27230b3097812134d16997","sha256:c5714e69031e25e5632be6a2652a3ec31130caf289edfba986722ed6a35adf37"],"state_sha256":"8c7c6b32bf1c908006617bf7b32b87cae8dcd3e6ac3a46559428a92e6d91df14"}