{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:X475PZ3665MOJUAXJR2FWFNGIM","short_pith_number":"pith:X475PZ36","canonical_record":{"source":{"id":"1311.2440","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-11-11T13:48:19Z","cross_cats_sorted":[],"title_canon_sha256":"a8f53a6bc591d627ec499cf48ec34dd5292ae543c406434bff1fa937b522eac8","abstract_canon_sha256":"9072bd30b0ee67499ca7df879fa85e745953a74856b8910821b4042ccc4e5302"},"schema_version":"1.0"},"canonical_sha256":"bf3fd7e77ef758e4d0174c745b15a6433d7e0a5e10b03fc50888de6f17ebb58c","source":{"kind":"arxiv","id":"1311.2440","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.2440","created_at":"2026-05-18T02:17:12Z"},{"alias_kind":"arxiv_version","alias_value":"1311.2440v4","created_at":"2026-05-18T02:17:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.2440","created_at":"2026-05-18T02:17:12Z"},{"alias_kind":"pith_short_12","alias_value":"X475PZ3665MO","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"X475PZ3665MOJUAX","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"X475PZ36","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:X475PZ3665MOJUAXJR2FWFNGIM","target":"record","payload":{"canonical_record":{"source":{"id":"1311.2440","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-11-11T13:48:19Z","cross_cats_sorted":[],"title_canon_sha256":"a8f53a6bc591d627ec499cf48ec34dd5292ae543c406434bff1fa937b522eac8","abstract_canon_sha256":"9072bd30b0ee67499ca7df879fa85e745953a74856b8910821b4042ccc4e5302"},"schema_version":"1.0"},"canonical_sha256":"bf3fd7e77ef758e4d0174c745b15a6433d7e0a5e10b03fc50888de6f17ebb58c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:12.450747Z","signature_b64":"h6qU2/v/aNPvDfv4sb4Sm4QrBGTAAvdpOnR61W+i9Tn4JjpUCkypmt8oH7x95KU4F7ZI3a3Y/d7i6YjViB32DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf3fd7e77ef758e4d0174c745b15a6433d7e0a5e10b03fc50888de6f17ebb58c","last_reissued_at":"2026-05-18T02:17:12.450079Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:12.450079Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.2440","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:17:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jSNoQfzvYXtUwUtmGJHHsSL911y8ZqP2oL8pkRY7shqUSKmF9/xMm/UfW8fHy2iCrbtKsTpxQKXR47uYhNR1Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T10:25:06.639999Z"},"content_sha256":"c8a51daf5c0a3257089a31e22b29e9ce53727eabe4f93b891e6d98d8ffcce8ca","schema_version":"1.0","event_id":"sha256:c8a51daf5c0a3257089a31e22b29e9ce53727eabe4f93b891e6d98d8ffcce8ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:X475PZ3665MOJUAXJR2FWFNGIM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Singlet and triplet bound state spectra in the four-electron Be-like atomic systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Alexei M. Frolov, Federico Latorre, Maria Belen Ruiz","submitted_at":"2013-11-11T13:48:19Z","abstract_excerpt":"A large number of bound singlet and triplet states in the four-electron Be-atom and Be-like ions B$^+$, C$^{2+}$, F$^{5+}$ and Mg$^{8+}$ are determined to milli-Hartree numerical accuracy ($1\\cdot 10^{-3}$ a.u.). These states include the bound singlet and triplet $S$-, $P$-, $D$-, $F$-, $G$-, $H$-, $I$- and $K$-states. Based on computational results we analyze the singlet and triplet series of the Be atom bound state spectrum and some four-electron ions: B$^+$, C$^{2+}$, F$^{5+}$ and Mg$^{8+}$ (Be-like ions). The analogous study of the Be atom triplet states was the topic of our earlier study "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.2440","kind":"arxiv","version":4},"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":"2026-05-18T02:17:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZYQ7bJ/MKgw3T32sMzKwPOe4E/S2MPVUu4YEk788hvFCI1oa5RublIIFY81oZMmATCeO7HoFvPca3d4Yn7/yAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T10:25:06.640354Z"},"content_sha256":"29a56de928aee7bf115c820c5942ddba35b5d702622973d00a764a4537d01bd7","schema_version":"1.0","event_id":"sha256:29a56de928aee7bf115c820c5942ddba35b5d702622973d00a764a4537d01bd7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X475PZ3665MOJUAXJR2FWFNGIM/bundle.json","state_url":"https://pith.science/pith/X475PZ3665MOJUAXJR2FWFNGIM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X475PZ3665MOJUAXJR2FWFNGIM/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":"2026-06-12T10:25:06Z","links":{"resolver":"https://pith.science/pith/X475PZ3665MOJUAXJR2FWFNGIM","bundle":"https://pith.science/pith/X475PZ3665MOJUAXJR2FWFNGIM/bundle.json","state":"https://pith.science/pith/X475PZ3665MOJUAXJR2FWFNGIM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X475PZ3665MOJUAXJR2FWFNGIM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:X475PZ3665MOJUAXJR2FWFNGIM","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":"9072bd30b0ee67499ca7df879fa85e745953a74856b8910821b4042ccc4e5302","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-11-11T13:48:19Z","title_canon_sha256":"a8f53a6bc591d627ec499cf48ec34dd5292ae543c406434bff1fa937b522eac8"},"schema_version":"1.0","source":{"id":"1311.2440","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.2440","created_at":"2026-05-18T02:17:12Z"},{"alias_kind":"arxiv_version","alias_value":"1311.2440v4","created_at":"2026-05-18T02:17:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.2440","created_at":"2026-05-18T02:17:12Z"},{"alias_kind":"pith_short_12","alias_value":"X475PZ3665MO","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"X475PZ3665MOJUAX","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"X475PZ36","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:29a56de928aee7bf115c820c5942ddba35b5d702622973d00a764a4537d01bd7","target":"graph","created_at":"2026-05-18T02:17:12Z","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":"A large number of bound singlet and triplet states in the four-electron Be-atom and Be-like ions B$^+$, C$^{2+}$, F$^{5+}$ and Mg$^{8+}$ are determined to milli-Hartree numerical accuracy ($1\\cdot 10^{-3}$ a.u.). These states include the bound singlet and triplet $S$-, $P$-, $D$-, $F$-, $G$-, $H$-, $I$- and $K$-states. Based on computational results we analyze the singlet and triplet series of the Be atom bound state spectrum and some four-electron ions: B$^+$, C$^{2+}$, F$^{5+}$ and Mg$^{8+}$ (Be-like ions). The analogous study of the Be atom triplet states was the topic of our earlier study ","authors_text":"Alexei M. Frolov, Federico Latorre, Maria Belen Ruiz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-11-11T13:48:19Z","title":"Singlet and triplet bound state spectra in the four-electron Be-like atomic systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.2440","kind":"arxiv","version":4},"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:c8a51daf5c0a3257089a31e22b29e9ce53727eabe4f93b891e6d98d8ffcce8ca","target":"record","created_at":"2026-05-18T02:17:12Z","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":"9072bd30b0ee67499ca7df879fa85e745953a74856b8910821b4042ccc4e5302","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-11-11T13:48:19Z","title_canon_sha256":"a8f53a6bc591d627ec499cf48ec34dd5292ae543c406434bff1fa937b522eac8"},"schema_version":"1.0","source":{"id":"1311.2440","kind":"arxiv","version":4}},"canonical_sha256":"bf3fd7e77ef758e4d0174c745b15a6433d7e0a5e10b03fc50888de6f17ebb58c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf3fd7e77ef758e4d0174c745b15a6433d7e0a5e10b03fc50888de6f17ebb58c","first_computed_at":"2026-05-18T02:17:12.450079Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:12.450079Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h6qU2/v/aNPvDfv4sb4Sm4QrBGTAAvdpOnR61W+i9Tn4JjpUCkypmt8oH7x95KU4F7ZI3a3Y/d7i6YjViB32DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:12.450747Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.2440","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8a51daf5c0a3257089a31e22b29e9ce53727eabe4f93b891e6d98d8ffcce8ca","sha256:29a56de928aee7bf115c820c5942ddba35b5d702622973d00a764a4537d01bd7"],"state_sha256":"a2e2b6531b65f6b3a88ada0bb915ac029bbbdd6185a9537db3922ede4e2991ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FcYXPtYQGkaYSvsSoDCIiG05DYSGpVJVF01yowID0KxuBFqs5bnxkWmf2rIgs2jtYHi3qyHYIxBWrD4qlbW9Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T10:25:06.642199Z","bundle_sha256":"c454377d85871449ce2744723bf5ee8a3c81f297f56f7f41ba8dd94061e498ab"}}