{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:556P5CO6YXOVVRT75LCJAO5ZZH","short_pith_number":"pith:556P5CO6","canonical_record":{"source":{"id":"1502.02415","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2015-02-09T10:09:59Z","cross_cats_sorted":["math.MP","nlin.CD","nlin.SI"],"title_canon_sha256":"4f0f707a99dabac0a06804f04fa94010d199691074fdd55e8eea23621e48ec83","abstract_canon_sha256":"c0c0ff9110056b5c90f6a562267054d82a3419e4bb3766f62a1868fa8d69ac79"},"schema_version":"1.0"},"canonical_sha256":"ef7cfe89dec5dd5ac67feac4903bb9c9f51ddcb804ade328f7e1586eac70d5f5","source":{"kind":"arxiv","id":"1502.02415","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.02415","created_at":"2026-05-18T00:07:28Z"},{"alias_kind":"arxiv_version","alias_value":"1502.02415v3","created_at":"2026-05-18T00:07:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.02415","created_at":"2026-05-18T00:07:28Z"},{"alias_kind":"pith_short_12","alias_value":"556P5CO6YXOV","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"556P5CO6YXOVVRT7","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"556P5CO6","created_at":"2026-05-18T12:29:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:556P5CO6YXOVVRT75LCJAO5ZZH","target":"record","payload":{"canonical_record":{"source":{"id":"1502.02415","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2015-02-09T10:09:59Z","cross_cats_sorted":["math.MP","nlin.CD","nlin.SI"],"title_canon_sha256":"4f0f707a99dabac0a06804f04fa94010d199691074fdd55e8eea23621e48ec83","abstract_canon_sha256":"c0c0ff9110056b5c90f6a562267054d82a3419e4bb3766f62a1868fa8d69ac79"},"schema_version":"1.0"},"canonical_sha256":"ef7cfe89dec5dd5ac67feac4903bb9c9f51ddcb804ade328f7e1586eac70d5f5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:28.730889Z","signature_b64":"T2MJ3yptreAm1aw72DMwzt0i5vZXyBjRYrSFS/l7mfIlXRrjDBDMVoxkf7MRoGtdwzxXdF5xcuhwZYOJOHU9AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef7cfe89dec5dd5ac67feac4903bb9c9f51ddcb804ade328f7e1586eac70d5f5","last_reissued_at":"2026-05-18T00:07:28.730197Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:28.730197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.02415","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":"2026-05-18T00:07:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yr/UHe5bGJNM7k0+VesJYKBazpauWdxrT6ehlliudgCAUTckPkZGYwHZPVBiRdh8jYwhKpoq520F9Up8jPZ0BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:22:27.257571Z"},"content_sha256":"0182327dcec0f9d2c0b11dc6592b5e288450b2bc2d5bdbed2cb9204702a3c512","schema_version":"1.0","event_id":"sha256:0182327dcec0f9d2c0b11dc6592b5e288450b2bc2d5bdbed2cb9204702a3c512"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:556P5CO6YXOVVRT75LCJAO5ZZH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Algebraic entropy of an extended Hietarinta-Viallet equation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.MP","nlin.CD","nlin.SI"],"primary_cat":"math-ph","authors_text":"Masataka Kanki, Takafumi Mase, Tetsuji Tokihiro","submitted_at":"2015-02-09T10:09:59Z","abstract_excerpt":"We introduce a series of discrete mappings, which is considered to be an extension of the Hietarinta-Viallet mapping with one parameter. We obtain the algebraic entropy for this mapping by obtaining the recurrence relation for the degrees of the iterated mapping. For some parameter values the mapping has a confined singularity, in which case the mapping is equivalent to a recurrence relation between irreducible polynomials. For other parameter values, the mapping does not pass the singularity confinement test. The properties of irreducibility and co-primeness of the terms play crucial roles in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.02415","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":"2026-05-18T00:07:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yFJYb1xQYVtwV314pclcDyu7wu0FKp78D+STgHgsDpAhYZsYnjHG70Due/jVbTvZ5MoSxVkNqj1fmFzWms6aDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:22:27.258204Z"},"content_sha256":"55fa5113377a5f05f901cd7f1cbb56ee8f1197b7b0025a885020a2b8579f52f2","schema_version":"1.0","event_id":"sha256:55fa5113377a5f05f901cd7f1cbb56ee8f1197b7b0025a885020a2b8579f52f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/556P5CO6YXOVVRT75LCJAO5ZZH/bundle.json","state_url":"https://pith.science/pith/556P5CO6YXOVVRT75LCJAO5ZZH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/556P5CO6YXOVVRT75LCJAO5ZZH/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":"2026-05-27T14:22:27Z","links":{"resolver":"https://pith.science/pith/556P5CO6YXOVVRT75LCJAO5ZZH","bundle":"https://pith.science/pith/556P5CO6YXOVVRT75LCJAO5ZZH/bundle.json","state":"https://pith.science/pith/556P5CO6YXOVVRT75LCJAO5ZZH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/556P5CO6YXOVVRT75LCJAO5ZZH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:556P5CO6YXOVVRT75LCJAO5ZZH","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":"c0c0ff9110056b5c90f6a562267054d82a3419e4bb3766f62a1868fa8d69ac79","cross_cats_sorted":["math.MP","nlin.CD","nlin.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2015-02-09T10:09:59Z","title_canon_sha256":"4f0f707a99dabac0a06804f04fa94010d199691074fdd55e8eea23621e48ec83"},"schema_version":"1.0","source":{"id":"1502.02415","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.02415","created_at":"2026-05-18T00:07:28Z"},{"alias_kind":"arxiv_version","alias_value":"1502.02415v3","created_at":"2026-05-18T00:07:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.02415","created_at":"2026-05-18T00:07:28Z"},{"alias_kind":"pith_short_12","alias_value":"556P5CO6YXOV","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"556P5CO6YXOVVRT7","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"556P5CO6","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:55fa5113377a5f05f901cd7f1cbb56ee8f1197b7b0025a885020a2b8579f52f2","target":"graph","created_at":"2026-05-18T00:07:28Z","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":"We introduce a series of discrete mappings, which is considered to be an extension of the Hietarinta-Viallet mapping with one parameter. We obtain the algebraic entropy for this mapping by obtaining the recurrence relation for the degrees of the iterated mapping. For some parameter values the mapping has a confined singularity, in which case the mapping is equivalent to a recurrence relation between irreducible polynomials. For other parameter values, the mapping does not pass the singularity confinement test. The properties of irreducibility and co-primeness of the terms play crucial roles in","authors_text":"Masataka Kanki, Takafumi Mase, Tetsuji Tokihiro","cross_cats":["math.MP","nlin.CD","nlin.SI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2015-02-09T10:09:59Z","title":"Algebraic entropy of an extended Hietarinta-Viallet equation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.02415","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":"sha256:0182327dcec0f9d2c0b11dc6592b5e288450b2bc2d5bdbed2cb9204702a3c512","target":"record","created_at":"2026-05-18T00:07:28Z","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":"c0c0ff9110056b5c90f6a562267054d82a3419e4bb3766f62a1868fa8d69ac79","cross_cats_sorted":["math.MP","nlin.CD","nlin.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2015-02-09T10:09:59Z","title_canon_sha256":"4f0f707a99dabac0a06804f04fa94010d199691074fdd55e8eea23621e48ec83"},"schema_version":"1.0","source":{"id":"1502.02415","kind":"arxiv","version":3}},"canonical_sha256":"ef7cfe89dec5dd5ac67feac4903bb9c9f51ddcb804ade328f7e1586eac70d5f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef7cfe89dec5dd5ac67feac4903bb9c9f51ddcb804ade328f7e1586eac70d5f5","first_computed_at":"2026-05-18T00:07:28.730197Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:28.730197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T2MJ3yptreAm1aw72DMwzt0i5vZXyBjRYrSFS/l7mfIlXRrjDBDMVoxkf7MRoGtdwzxXdF5xcuhwZYOJOHU9AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:28.730889Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.02415","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0182327dcec0f9d2c0b11dc6592b5e288450b2bc2d5bdbed2cb9204702a3c512","sha256:55fa5113377a5f05f901cd7f1cbb56ee8f1197b7b0025a885020a2b8579f52f2"],"state_sha256":"38059172f7981585c177a04bfb9b7e67c07cefd16b0deecac1441db17f1a32aa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jVG8aDXvD+5MbiB1t3a1nJqNEKX0OOtBAEM3Z30lv14Gl0NYXp8tIQ2B7IjJWOWWmCtMr2g8qtyTU/p9M1blBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:22:27.261577Z","bundle_sha256":"b6e7e7245e21e97fb7d07cefefd55d15227b801e15e9a8dd4a438d02bc29c776"}}