{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IQBBSLQRJHXVYFP3PO6ULD7O4L","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":"fcb99a1697d09093649b880bc6d49365376e95bcc4995b8863c7f1df9d8ce7df","cross_cats_sorted":["cs.LO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.LO","submitted_at":"2012-08-03T22:23:22Z","title_canon_sha256":"5d7483c0926a3d3f1f96572439dbd0b78dcbf252fb1a4bceddb37c4bd51631c0"},"schema_version":"1.0","source":{"id":"1208.0861","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0861","created_at":"2026-05-18T03:48:46Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0861v1","created_at":"2026-05-18T03:48:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0861","created_at":"2026-05-18T03:48:46Z"},{"alias_kind":"pith_short_12","alias_value":"IQBBSLQRJHXV","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IQBBSLQRJHXVYFP3","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IQBBSLQR","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:19fc95a76255d1aec3517ef907e5a7a8d238d71d51ea25462939f9b93ad59548","target":"graph","created_at":"2026-05-18T03:48:46Z","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":"A natural deduction system for intuitionistic predicate logic with existential \\ instantiation rule presented here uses Hilbert's $\\e$-symbol. It is conservative over intuitionistic predicate logic. We provide a completeness proof for a suitable Kripke semantics, sketch an approach to a normalization proof, survey related work and state some open problems. Our system extends intuitionistic systems with $\\e$-symbol due to A. Dragalin and Sh. Maehara.","authors_text":"Grigori Mints","cross_cats":["cs.LO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.LO","submitted_at":"2012-08-03T22:23:22Z","title":"Intuitionistic Existential Instantiation and Epsilon Symbol"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0861","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":"sha256:59650045df6985795bf089e3da37594fc89160a0408201c7547326a99841e12e","target":"record","created_at":"2026-05-18T03:48:46Z","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":"fcb99a1697d09093649b880bc6d49365376e95bcc4995b8863c7f1df9d8ce7df","cross_cats_sorted":["cs.LO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.LO","submitted_at":"2012-08-03T22:23:22Z","title_canon_sha256":"5d7483c0926a3d3f1f96572439dbd0b78dcbf252fb1a4bceddb37c4bd51631c0"},"schema_version":"1.0","source":{"id":"1208.0861","kind":"arxiv","version":1}},"canonical_sha256":"4402192e1149ef5c15fb7bbd458feee2e43ebc839347158ef33694780825a3c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4402192e1149ef5c15fb7bbd458feee2e43ebc839347158ef33694780825a3c2","first_computed_at":"2026-05-18T03:48:46.159759Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:48:46.159759Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hUUKryR9Q3IgBfKelfmQj5nTj2t3q2/KN3CloCx6fSqKGN0Bi65KfZxW8EqyKbrIRdtMx33QkadkNzktaMMwDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:48:46.160510Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.0861","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59650045df6985795bf089e3da37594fc89160a0408201c7547326a99841e12e","sha256:19fc95a76255d1aec3517ef907e5a7a8d238d71d51ea25462939f9b93ad59548"],"state_sha256":"df0a07c8bfcb69689e12fe7b1aec1b3cd934ccd6c816f7a21b071fc4bda2f807"}