{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SWHZV5PQH422QRYY4XZCCYSSEZ","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":"5ed4e04efb94a9ed6bea4881aa6212c3ec80527ef61d0c0c84f45b834680d81d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2015-10-29T00:10:03Z","title_canon_sha256":"bd8501122e361d328d4546ee6e64be56096260c75f4f2b52b680563585ba31e7"},"schema_version":"1.0","source":{"id":"1510.08525","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.08525","created_at":"2026-05-18T01:28:28Z"},{"alias_kind":"arxiv_version","alias_value":"1510.08525v1","created_at":"2026-05-18T01:28:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.08525","created_at":"2026-05-18T01:28:28Z"},{"alias_kind":"pith_short_12","alias_value":"SWHZV5PQH422","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SWHZV5PQH422QRYY","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SWHZV5PQ","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:8e554708d153a925dde661480f8730c54971754b00ef5dbbb4b151dcd675c290","target":"graph","created_at":"2026-05-18T01:28:28Z","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":"This paper presents an intelligent tutoring system, GeoTutor, for Euclidean Geometry that is automatically able to synthesize proof problems and their respective solutions given a geometric figure together with a set of properties true of it. GeoTutor can provide personalized practice problems that address student deficiencies in the subject matter.","authors_text":"Chris Alvin, Rupak Majumdar, Sumit Gulwani, Supratik Mukhopadhyay","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2015-10-29T00:10:03Z","title":"Automatic Synthesis of Geometry Problems for an Intelligent Tutoring System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.08525","kind":"arxiv","version":1},"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":"sha256:005938c9c98c1c481e6adbb556251b610efcccbbdd3cb52d253bb69dcf8a8c1c","target":"record","created_at":"2026-05-18T01:28:28Z","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":"5ed4e04efb94a9ed6bea4881aa6212c3ec80527ef61d0c0c84f45b834680d81d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2015-10-29T00:10:03Z","title_canon_sha256":"bd8501122e361d328d4546ee6e64be56096260c75f4f2b52b680563585ba31e7"},"schema_version":"1.0","source":{"id":"1510.08525","kind":"arxiv","version":1}},"canonical_sha256":"958f9af5f03f35a84718e5f2216252266c410a2a3663bd53475225a31ef5fa27","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"958f9af5f03f35a84718e5f2216252266c410a2a3663bd53475225a31ef5fa27","first_computed_at":"2026-05-18T01:28:28.675951Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:28.675951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QPE7twmdgY2Jg+FsUIFiENcwjj2OSwYzMDc2WblZ/ORTj4R3k6r19c6LVHPnbLHI2FUwWu0PraBV3PsE9yerDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:28.676557Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.08525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:005938c9c98c1c481e6adbb556251b610efcccbbdd3cb52d253bb69dcf8a8c1c","sha256:8e554708d153a925dde661480f8730c54971754b00ef5dbbb4b151dcd675c290"],"state_sha256":"8d953496405dd3ae4a93f0536d9ce003a8c9985b9ba83cc0d55b7c464947f873"}