{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:M2WF3JSXXR2LQG64TLBZJ6HZTP","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":"73a0926c1cf03a0c18755f18ac45e8a66fd7ab7f2823fb69ec7aa6bcbbfe9cfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-24T10:44:49Z","title_canon_sha256":"786300abd5e371661e860d3b0708efe8db5590f29e9918e9f641457812bf58b9"},"schema_version":"1.0","source":{"id":"1701.06802","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.06802","created_at":"2026-05-18T00:52:12Z"},{"alias_kind":"arxiv_version","alias_value":"1701.06802v1","created_at":"2026-05-18T00:52:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.06802","created_at":"2026-05-18T00:52:12Z"},{"alias_kind":"pith_short_12","alias_value":"M2WF3JSXXR2L","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"M2WF3JSXXR2LQG64","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"M2WF3JSX","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:e2d3dc1af2ff4695cc139475a33b61345a73cf312e0addf8609e8dd20b083201","target":"graph","created_at":"2026-05-18T00:52:12Z","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":"Solar activity affects the whole heliosphere and near-Earth space environment. It has been reported in the literature that the mechanism responsible for the solar activity modulation behaves like a low-dimensional chaotic system. Studying these kind of physical systems and, in particular, their temporal evolution requires non-linear analysis methods. To this regard, in this work we apply the recurrence quantification analysis (RQA) to the study of two of the most commonly used solar cycle indicators; i.e. the series of the sunspots number (SSN), and the radio flux 10.7 cm, with the aim of iden","authors_text":"F. Giorgi, G. Consolini, I. Ermolli, M. Stangalini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-24T10:44:49Z","title":"Recurrence Quantification Analysis of Two Solar Cycle Indices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.06802","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:d1e08f97e6a7a1b4e9d37363f8ea8d2130cfbbced9a6b229cf783f6df3727647","target":"record","created_at":"2026-05-18T00:52:12Z","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":"73a0926c1cf03a0c18755f18ac45e8a66fd7ab7f2823fb69ec7aa6bcbbfe9cfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-24T10:44:49Z","title_canon_sha256":"786300abd5e371661e860d3b0708efe8db5590f29e9918e9f641457812bf58b9"},"schema_version":"1.0","source":{"id":"1701.06802","kind":"arxiv","version":1}},"canonical_sha256":"66ac5da657bc74b81bdc9ac394f8f99bea286bff808e9d939212bbf63a29373e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66ac5da657bc74b81bdc9ac394f8f99bea286bff808e9d939212bbf63a29373e","first_computed_at":"2026-05-18T00:52:12.163546Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:12.163546Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0o0NVk+cdalLfsddYpDPENJm0F7ZJ5OMK1DzG1pBer0+ERsTadLQrImMUY4NQ9WJWMDHNAL/eOagASgjv6G1Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:12.164124Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.06802","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d1e08f97e6a7a1b4e9d37363f8ea8d2130cfbbced9a6b229cf783f6df3727647","sha256:e2d3dc1af2ff4695cc139475a33b61345a73cf312e0addf8609e8dd20b083201"],"state_sha256":"cc37ae885fc1ae5d076ab6bd4d776c3fb783233102cf0c35417e93d305b5c49f"}