{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ZOEJF5ZKI2S6GEQHE67CDVBP5R","short_pith_number":"pith:ZOEJF5ZK","canonical_record":{"source":{"id":"1704.06358","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-04-20T22:28:14Z","cross_cats_sorted":["math.DS"],"title_canon_sha256":"aa8573d88e450fd3dfba8a490967b519d3a8f3862ee84c5a534dc387c63ee322","abstract_canon_sha256":"776de8e4a9535a450bc79c46524c99b0f63b0ba579a2da7135688b6a3b9ea3e3"},"schema_version":"1.0"},"canonical_sha256":"cb8892f72a46a5e3120727be21d42fec446d9a6826cbff3caa150b107c4e6786","source":{"kind":"arxiv","id":"1704.06358","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.06358","created_at":"2026-05-18T00:12:06Z"},{"alias_kind":"arxiv_version","alias_value":"1704.06358v3","created_at":"2026-05-18T00:12:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.06358","created_at":"2026-05-18T00:12:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZOEJF5ZKI2S6","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZOEJF5ZKI2S6GEQH","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZOEJF5ZK","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ZOEJF5ZKI2S6GEQHE67CDVBP5R","target":"record","payload":{"canonical_record":{"source":{"id":"1704.06358","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-04-20T22:28:14Z","cross_cats_sorted":["math.DS"],"title_canon_sha256":"aa8573d88e450fd3dfba8a490967b519d3a8f3862ee84c5a534dc387c63ee322","abstract_canon_sha256":"776de8e4a9535a450bc79c46524c99b0f63b0ba579a2da7135688b6a3b9ea3e3"},"schema_version":"1.0"},"canonical_sha256":"cb8892f72a46a5e3120727be21d42fec446d9a6826cbff3caa150b107c4e6786","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:06.412414Z","signature_b64":"oknY5syqoXSg8OzBTWmmbiUcQbsYX+JFkinZh3lyQpt9t/Pnxc9O1S++XsmLJGaiXKCvM9ppZbCjtFxgIPD6AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb8892f72a46a5e3120727be21d42fec446d9a6826cbff3caa150b107c4e6786","last_reissued_at":"2026-05-18T00:12:06.411727Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:06.411727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.06358","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:12:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gzr8dzNfNvjKcYRd1A/eqW0A9HXaybIsGjTziOmk+qrfWgucNMxJvJzV2YncMbeMhm0Vrdh1wA99LqT/DqVSBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:25:25.444671Z"},"content_sha256":"03f64499aaf7dfd5615e62934447559825b218ba20bb16c6009dc7e410f23ad6","schema_version":"1.0","event_id":"sha256:03f64499aaf7dfd5615e62934447559825b218ba20bb16c6009dc7e410f23ad6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ZOEJF5ZKI2S6GEQHE67CDVBP5R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stability and Fluctuations in a Simple Model of Phonetic Category Change","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.DS"],"primary_cat":"cs.CL","authors_text":"Benjamin Goodman, Paul Tupper","submitted_at":"2017-04-20T22:28:14Z","abstract_excerpt":"In spoken languages, speakers divide up the space of phonetic possibilities into different regions, corresponding to different phonemes. We consider a simple exemplar model of how this division of phonetic space varies over time among a population of language users. In the particular model we consider, we show that, once the system is initialized with a given set of phonemes, that phonemes do not become extinct: all phonemes will be maintained in the system for all time. This is in contrast to what is observed in more complex models. Furthermore, we show that the boundaries between phonemes fl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.06358","kind":"arxiv","version":3},"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":"2026-05-18T00:12:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QQOPCWS91XfaaEm+27uvi0PreyY/YBoyMpXMJ9J1fUC8jzCHaAn3MzHDDylGiriD3jq+Jc6EkiTADnUhTCbhCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:25:25.445262Z"},"content_sha256":"bfb195d235593ddd7bc8cff37ba930dca93e3b9792e898ea73027a13c51985cf","schema_version":"1.0","event_id":"sha256:bfb195d235593ddd7bc8cff37ba930dca93e3b9792e898ea73027a13c51985cf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZOEJF5ZKI2S6GEQHE67CDVBP5R/bundle.json","state_url":"https://pith.science/pith/ZOEJF5ZKI2S6GEQHE67CDVBP5R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZOEJF5ZKI2S6GEQHE67CDVBP5R/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":"2026-05-31T05:25:25Z","links":{"resolver":"https://pith.science/pith/ZOEJF5ZKI2S6GEQHE67CDVBP5R","bundle":"https://pith.science/pith/ZOEJF5ZKI2S6GEQHE67CDVBP5R/bundle.json","state":"https://pith.science/pith/ZOEJF5ZKI2S6GEQHE67CDVBP5R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZOEJF5ZKI2S6GEQHE67CDVBP5R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ZOEJF5ZKI2S6GEQHE67CDVBP5R","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":"776de8e4a9535a450bc79c46524c99b0f63b0ba579a2da7135688b6a3b9ea3e3","cross_cats_sorted":["math.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-04-20T22:28:14Z","title_canon_sha256":"aa8573d88e450fd3dfba8a490967b519d3a8f3862ee84c5a534dc387c63ee322"},"schema_version":"1.0","source":{"id":"1704.06358","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.06358","created_at":"2026-05-18T00:12:06Z"},{"alias_kind":"arxiv_version","alias_value":"1704.06358v3","created_at":"2026-05-18T00:12:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.06358","created_at":"2026-05-18T00:12:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZOEJF5ZKI2S6","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZOEJF5ZKI2S6GEQH","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZOEJF5ZK","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:bfb195d235593ddd7bc8cff37ba930dca93e3b9792e898ea73027a13c51985cf","target":"graph","created_at":"2026-05-18T00:12:06Z","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":"In spoken languages, speakers divide up the space of phonetic possibilities into different regions, corresponding to different phonemes. We consider a simple exemplar model of how this division of phonetic space varies over time among a population of language users. In the particular model we consider, we show that, once the system is initialized with a given set of phonemes, that phonemes do not become extinct: all phonemes will be maintained in the system for all time. This is in contrast to what is observed in more complex models. Furthermore, we show that the boundaries between phonemes fl","authors_text":"Benjamin Goodman, Paul Tupper","cross_cats":["math.DS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-04-20T22:28:14Z","title":"Stability and Fluctuations in a Simple Model of Phonetic Category Change"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.06358","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":"sha256:03f64499aaf7dfd5615e62934447559825b218ba20bb16c6009dc7e410f23ad6","target":"record","created_at":"2026-05-18T00:12:06Z","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":"776de8e4a9535a450bc79c46524c99b0f63b0ba579a2da7135688b6a3b9ea3e3","cross_cats_sorted":["math.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-04-20T22:28:14Z","title_canon_sha256":"aa8573d88e450fd3dfba8a490967b519d3a8f3862ee84c5a534dc387c63ee322"},"schema_version":"1.0","source":{"id":"1704.06358","kind":"arxiv","version":3}},"canonical_sha256":"cb8892f72a46a5e3120727be21d42fec446d9a6826cbff3caa150b107c4e6786","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb8892f72a46a5e3120727be21d42fec446d9a6826cbff3caa150b107c4e6786","first_computed_at":"2026-05-18T00:12:06.411727Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:06.411727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oknY5syqoXSg8OzBTWmmbiUcQbsYX+JFkinZh3lyQpt9t/Pnxc9O1S++XsmLJGaiXKCvM9ppZbCjtFxgIPD6AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:06.412414Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.06358","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03f64499aaf7dfd5615e62934447559825b218ba20bb16c6009dc7e410f23ad6","sha256:bfb195d235593ddd7bc8cff37ba930dca93e3b9792e898ea73027a13c51985cf"],"state_sha256":"f4aa0870436e4921411b131dfbd892387003ef446008db479d0042933d0a56f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hEjoK+olRYNIZOZJQ8Rpce+1PXvQkFNhyup/Shb9X+YgUTVgmm1zJh41fGwR4eBOetHpi3bPG4DwGoN+lZzmAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T05:25:25.448859Z","bundle_sha256":"3a691c4d60c0ea11895ec84e1e49ad1b04873508a321c56c1994d9210886ce16"}}