{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:X5EG6NG4SI3UMN64H6XTO4LV24","short_pith_number":"pith:X5EG6NG4","canonical_record":{"source":{"id":"1108.3702","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2011-08-18T10:00:14Z","cross_cats_sorted":[],"title_canon_sha256":"943524a2285daf605e19ef2320b8e0bbce822a574ab16e28004b886df04ed4ac","abstract_canon_sha256":"1bbeaee46b3443ecfb1437430a6e3c9516c4dfd4f7e4a5815da83edaee5f075a"},"schema_version":"1.0"},"canonical_sha256":"bf486f34dc92374637dc3faf377175d72d6a34988dde2c68ccd8695fe87104cb","source":{"kind":"arxiv","id":"1108.3702","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.3702","created_at":"2026-05-18T04:15:07Z"},{"alias_kind":"arxiv_version","alias_value":"1108.3702v1","created_at":"2026-05-18T04:15:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.3702","created_at":"2026-05-18T04:15:07Z"},{"alias_kind":"pith_short_12","alias_value":"X5EG6NG4SI3U","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"X5EG6NG4SI3UMN64","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"X5EG6NG4","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:X5EG6NG4SI3UMN64H6XTO4LV24","target":"record","payload":{"canonical_record":{"source":{"id":"1108.3702","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2011-08-18T10:00:14Z","cross_cats_sorted":[],"title_canon_sha256":"943524a2285daf605e19ef2320b8e0bbce822a574ab16e28004b886df04ed4ac","abstract_canon_sha256":"1bbeaee46b3443ecfb1437430a6e3c9516c4dfd4f7e4a5815da83edaee5f075a"},"schema_version":"1.0"},"canonical_sha256":"bf486f34dc92374637dc3faf377175d72d6a34988dde2c68ccd8695fe87104cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:15:07.631738Z","signature_b64":"q7OXOCxdq8BNPoWs9iBJ1oGMYsNZ8RgozNmaNXrTZiJtIi7S9DhQgP84k5MQukOtPMn6y75VzDDqlwdP0u3vCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf486f34dc92374637dc3faf377175d72d6a34988dde2c68ccd8695fe87104cb","last_reissued_at":"2026-05-18T04:15:07.631248Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:15:07.631248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.3702","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:15:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1u8w7edBUWK6ts3rsufxO4fxm6bE9CG6kT86O67TcxVplFWuhJMiSMKcWxsOVlmgDGpdWP6gM2qZbr9TLP/rBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:42:14.978303Z"},"content_sha256":"aea9e0a84cabc267b7d8077713fce2267f98700a36735890d87452e3b54e13a2","schema_version":"1.0","event_id":"sha256:aea9e0a84cabc267b7d8077713fce2267f98700a36735890d87452e3b54e13a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:X5EG6NG4SI3UMN64H6XTO4LV24","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Model of skyscraper evacuation with the use of space symmetry and fluid dynamic approximation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.MA","authors_text":"A. Kupczak, J. Malinowski, W. Sikora","submitted_at":"2011-08-18T10:00:14Z","abstract_excerpt":"The simulation of evacuation of pedestrians from skyscraper is a situation where the symmetry analysis method and equations of fluid dynamics finds to be very useful. When applied, they strongly reduce the number of free parameters used in simulations and in such a way speed up the calculations and make them easier to manage by the programmer and what is even more important, they can give a fresh insight into a problem of evacuation and help with incorporation of \"Ambient Intelligent Devices\" into future real buildings. We have analyzed various, simplified, cases of evacuation from skyscraper "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.3702","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:15:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bg31vBL8mjuWb9kS5/rUFUVDF+NY7/+gvm9XMgwktFG7DUo6Gc34sCsGOQsIRPLiuSlnGRESCl9NXxHygpQhCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:42:14.978758Z"},"content_sha256":"2337f58198f56e01dd1168f8e612f8906c32522438484ac0cf17bd02d175b5b6","schema_version":"1.0","event_id":"sha256:2337f58198f56e01dd1168f8e612f8906c32522438484ac0cf17bd02d175b5b6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X5EG6NG4SI3UMN64H6XTO4LV24/bundle.json","state_url":"https://pith.science/pith/X5EG6NG4SI3UMN64H6XTO4LV24/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X5EG6NG4SI3UMN64H6XTO4LV24/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T12:42:14Z","links":{"resolver":"https://pith.science/pith/X5EG6NG4SI3UMN64H6XTO4LV24","bundle":"https://pith.science/pith/X5EG6NG4SI3UMN64H6XTO4LV24/bundle.json","state":"https://pith.science/pith/X5EG6NG4SI3UMN64H6XTO4LV24/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X5EG6NG4SI3UMN64H6XTO4LV24/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:X5EG6NG4SI3UMN64H6XTO4LV24","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":"1bbeaee46b3443ecfb1437430a6e3c9516c4dfd4f7e4a5815da83edaee5f075a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2011-08-18T10:00:14Z","title_canon_sha256":"943524a2285daf605e19ef2320b8e0bbce822a574ab16e28004b886df04ed4ac"},"schema_version":"1.0","source":{"id":"1108.3702","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.3702","created_at":"2026-05-18T04:15:07Z"},{"alias_kind":"arxiv_version","alias_value":"1108.3702v1","created_at":"2026-05-18T04:15:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.3702","created_at":"2026-05-18T04:15:07Z"},{"alias_kind":"pith_short_12","alias_value":"X5EG6NG4SI3U","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"X5EG6NG4SI3UMN64","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"X5EG6NG4","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:2337f58198f56e01dd1168f8e612f8906c32522438484ac0cf17bd02d175b5b6","target":"graph","created_at":"2026-05-18T04:15:07Z","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":"The simulation of evacuation of pedestrians from skyscraper is a situation where the symmetry analysis method and equations of fluid dynamics finds to be very useful. When applied, they strongly reduce the number of free parameters used in simulations and in such a way speed up the calculations and make them easier to manage by the programmer and what is even more important, they can give a fresh insight into a problem of evacuation and help with incorporation of \"Ambient Intelligent Devices\" into future real buildings. We have analyzed various, simplified, cases of evacuation from skyscraper ","authors_text":"A. Kupczak, J. Malinowski, W. Sikora","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2011-08-18T10:00:14Z","title":"Model of skyscraper evacuation with the use of space symmetry and fluid dynamic approximation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.3702","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:aea9e0a84cabc267b7d8077713fce2267f98700a36735890d87452e3b54e13a2","target":"record","created_at":"2026-05-18T04:15:07Z","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":"1bbeaee46b3443ecfb1437430a6e3c9516c4dfd4f7e4a5815da83edaee5f075a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2011-08-18T10:00:14Z","title_canon_sha256":"943524a2285daf605e19ef2320b8e0bbce822a574ab16e28004b886df04ed4ac"},"schema_version":"1.0","source":{"id":"1108.3702","kind":"arxiv","version":1}},"canonical_sha256":"bf486f34dc92374637dc3faf377175d72d6a34988dde2c68ccd8695fe87104cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf486f34dc92374637dc3faf377175d72d6a34988dde2c68ccd8695fe87104cb","first_computed_at":"2026-05-18T04:15:07.631248Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:15:07.631248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q7OXOCxdq8BNPoWs9iBJ1oGMYsNZ8RgozNmaNXrTZiJtIi7S9DhQgP84k5MQukOtPMn6y75VzDDqlwdP0u3vCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:15:07.631738Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.3702","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aea9e0a84cabc267b7d8077713fce2267f98700a36735890d87452e3b54e13a2","sha256:2337f58198f56e01dd1168f8e612f8906c32522438484ac0cf17bd02d175b5b6"],"state_sha256":"72ac9affc16686fc591be8d202e429926b8b0caa91866bf8799536d9794cbe05"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y1pUw3pNjsTqys2pn7AQXm4BTdQX+vKKlC1wUUu/1OgvI2b8BW41tx8JC4jfD1DE0VVdCSGWi4u7f9uvXgwTBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:42:14.982026Z","bundle_sha256":"21d998784fb6ded946ee424f2829d4cc73207564ca7b0adb40dd419b76d0cbda"}}