{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:SDBZESUZ7GY3KCAXZGOKKVZ2MP","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":"006df839e3aa2094b48b36df66ef2d8003496d3de5d266a55a8a2fc7bd9b0651","cross_cats_sorted":["cs.FL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2011-08-17T09:15:32Z","title_canon_sha256":"7edfb3e6875e52cdbdbee575928bab73b081ed3e09c3eff54c737189278a0d2b"},"schema_version":"1.0","source":{"id":"1108.3431","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.3431","created_at":"2026-05-18T04:15:17Z"},{"alias_kind":"arxiv_version","alias_value":"1108.3431v1","created_at":"2026-05-18T04:15:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.3431","created_at":"2026-05-18T04:15:17Z"},{"alias_kind":"pith_short_12","alias_value":"SDBZESUZ7GY3","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"SDBZESUZ7GY3KCAX","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"SDBZESUZ","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:bf9179f5f58ebb73050864d8b476765a62697bdce6dd189a466239563f5f6672","target":"graph","created_at":"2026-05-18T04:15:17Z","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":"P systems with active membranes were used to generate languages, in the sense of languages associated with the structure of membrane systems. Here, we analyze the power of P systems with membrane creation and dissolution restricted to elementary membranes, P systems without membrane dissolution operating according to certain output modes. This leads us to characterizations of recursively enumerable languages.","authors_text":"H. Ramesh, Marian Gheorghe, Rama Raghavan, Shankara Narayanan Krishna","cross_cats":["cs.FL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2011-08-17T09:15:32Z","title":"Further Results on Languages of Membrane Structures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.3431","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":"sha256:97e455f61710472ee568551f56bbc5f08461722eee79fca0f7765d15b7b5f63c","target":"record","created_at":"2026-05-18T04:15:17Z","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":"006df839e3aa2094b48b36df66ef2d8003496d3de5d266a55a8a2fc7bd9b0651","cross_cats_sorted":["cs.FL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2011-08-17T09:15:32Z","title_canon_sha256":"7edfb3e6875e52cdbdbee575928bab73b081ed3e09c3eff54c737189278a0d2b"},"schema_version":"1.0","source":{"id":"1108.3431","kind":"arxiv","version":1}},"canonical_sha256":"90c3924a99f9b1b50817c99ca5573a63d46205a6a8108c5d74196bc1ade2baa6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90c3924a99f9b1b50817c99ca5573a63d46205a6a8108c5d74196bc1ade2baa6","first_computed_at":"2026-05-18T04:15:17.848987Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:15:17.848987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tMnc6dm4pvBavrCbI8Ea6xmb4EOl+RF1NqdL6Z0u+UoVu1tK+PlU+JzNW0QibXobskz/tq9hWAO4G85S+mXiCg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:15:17.849457Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.3431","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97e455f61710472ee568551f56bbc5f08461722eee79fca0f7765d15b7b5f63c","sha256:bf9179f5f58ebb73050864d8b476765a62697bdce6dd189a466239563f5f6672"],"state_sha256":"3ebf4fc705f180368904eaba2bc720e204521f6ff6bc2211fd75bbdb368a6028"}