{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:7VTPV5U7P37V5CYH2JNJNGWDZW","short_pith_number":"pith:7VTPV5U7","canonical_record":{"source":{"id":"1104.3587","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-04-18T20:51:04Z","cross_cats_sorted":[],"title_canon_sha256":"77fdf2080e5a9d2c37a31f157d22821e9e11c3eea8397af590b7d139ab6b06df","abstract_canon_sha256":"cb9014f698827148e022a896806d722520039321983559ef6b34fb29b0a10430"},"schema_version":"1.0"},"canonical_sha256":"fd66faf69f7eff5e8b07d25a969ac3cd9e291cf4c7b4b935766691dce7821902","source":{"kind":"arxiv","id":"1104.3587","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.3587","created_at":"2026-05-18T04:20:04Z"},{"alias_kind":"arxiv_version","alias_value":"1104.3587v3","created_at":"2026-05-18T04:20:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.3587","created_at":"2026-05-18T04:20:04Z"},{"alias_kind":"pith_short_12","alias_value":"7VTPV5U7P37V","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7VTPV5U7P37V5CYH","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7VTPV5U7","created_at":"2026-05-18T12:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:7VTPV5U7P37V5CYH2JNJNGWDZW","target":"record","payload":{"canonical_record":{"source":{"id":"1104.3587","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-04-18T20:51:04Z","cross_cats_sorted":[],"title_canon_sha256":"77fdf2080e5a9d2c37a31f157d22821e9e11c3eea8397af590b7d139ab6b06df","abstract_canon_sha256":"cb9014f698827148e022a896806d722520039321983559ef6b34fb29b0a10430"},"schema_version":"1.0"},"canonical_sha256":"fd66faf69f7eff5e8b07d25a969ac3cd9e291cf4c7b4b935766691dce7821902","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:20:04.507075Z","signature_b64":"9kGXant87uz6wtN217eO1RXJdoCjt/BWKDik6Rg1JvyvBzrgzuiMpef1modxS/Bsx+EjdzO6Z63PrAFJ4vubCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd66faf69f7eff5e8b07d25a969ac3cd9e291cf4c7b4b935766691dce7821902","last_reissued_at":"2026-05-18T04:20:04.506414Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:20:04.506414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.3587","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":"2026-05-18T04:20:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KLTaB+YgLFDsNsOhNIb7RThg57URdEwjsQGaqTYfoRLvc4Ojoc0BJFzsuz4gt7ROakFla31w3WZYptLAxKtDBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T01:27:00.909537Z"},"content_sha256":"5bdedefa9862082c7d55a4003ea5b01fbe32553f130770ef014681f4eb14260a","schema_version":"1.0","event_id":"sha256:5bdedefa9862082c7d55a4003ea5b01fbe32553f130770ef014681f4eb14260a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:7VTPV5U7P37V5CYH2JNJNGWDZW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How to halve maximal supergravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Adolfo Guarino, Diederik Roest, Giuseppe Dibitetto","submitted_at":"2011-04-18T20:51:04Z","abstract_excerpt":"We work out the truncation from maximal to half-maximal supergravity in four dimensions. In particular, we determine the explicit constraints on the embedding tensors of both theories. These tensors specify the complete theories, including gauge groups and scalar potentials. Firstly, we find the linear constraint on N=8 theories to allow for a truncation to N=4. Secondly, we determine the additional N=4 quadratic constraints following from N=8. Finally, we comment on a brane interpretation as tadpole conditions for the latter."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.3587","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":"2026-05-18T04:20:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pIy6ew6Rbi97suRH8Udq9GcBkZ5W/DznALtzuRMkytpkYMpCM3jaeV2h7oyEhmhsJvXwTjV3aCm4K08vgyXxBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T01:27:00.909885Z"},"content_sha256":"bc1ea725d614f57fb2e778e64db45afc9a28f407fdd1c817eb775e0b813c8d62","schema_version":"1.0","event_id":"sha256:bc1ea725d614f57fb2e778e64db45afc9a28f407fdd1c817eb775e0b813c8d62"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7VTPV5U7P37V5CYH2JNJNGWDZW/bundle.json","state_url":"https://pith.science/pith/7VTPV5U7P37V5CYH2JNJNGWDZW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7VTPV5U7P37V5CYH2JNJNGWDZW/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":"2026-06-04T01:27:00Z","links":{"resolver":"https://pith.science/pith/7VTPV5U7P37V5CYH2JNJNGWDZW","bundle":"https://pith.science/pith/7VTPV5U7P37V5CYH2JNJNGWDZW/bundle.json","state":"https://pith.science/pith/7VTPV5U7P37V5CYH2JNJNGWDZW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7VTPV5U7P37V5CYH2JNJNGWDZW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:7VTPV5U7P37V5CYH2JNJNGWDZW","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":"cb9014f698827148e022a896806d722520039321983559ef6b34fb29b0a10430","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-04-18T20:51:04Z","title_canon_sha256":"77fdf2080e5a9d2c37a31f157d22821e9e11c3eea8397af590b7d139ab6b06df"},"schema_version":"1.0","source":{"id":"1104.3587","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.3587","created_at":"2026-05-18T04:20:04Z"},{"alias_kind":"arxiv_version","alias_value":"1104.3587v3","created_at":"2026-05-18T04:20:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.3587","created_at":"2026-05-18T04:20:04Z"},{"alias_kind":"pith_short_12","alias_value":"7VTPV5U7P37V","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7VTPV5U7P37V5CYH","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7VTPV5U7","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:bc1ea725d614f57fb2e778e64db45afc9a28f407fdd1c817eb775e0b813c8d62","target":"graph","created_at":"2026-05-18T04:20:04Z","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 work out the truncation from maximal to half-maximal supergravity in four dimensions. In particular, we determine the explicit constraints on the embedding tensors of both theories. These tensors specify the complete theories, including gauge groups and scalar potentials. Firstly, we find the linear constraint on N=8 theories to allow for a truncation to N=4. Secondly, we determine the additional N=4 quadratic constraints following from N=8. Finally, we comment on a brane interpretation as tadpole conditions for the latter.","authors_text":"Adolfo Guarino, Diederik Roest, Giuseppe Dibitetto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-04-18T20:51:04Z","title":"How to halve maximal supergravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.3587","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":"sha256:5bdedefa9862082c7d55a4003ea5b01fbe32553f130770ef014681f4eb14260a","target":"record","created_at":"2026-05-18T04:20:04Z","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":"cb9014f698827148e022a896806d722520039321983559ef6b34fb29b0a10430","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-04-18T20:51:04Z","title_canon_sha256":"77fdf2080e5a9d2c37a31f157d22821e9e11c3eea8397af590b7d139ab6b06df"},"schema_version":"1.0","source":{"id":"1104.3587","kind":"arxiv","version":3}},"canonical_sha256":"fd66faf69f7eff5e8b07d25a969ac3cd9e291cf4c7b4b935766691dce7821902","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd66faf69f7eff5e8b07d25a969ac3cd9e291cf4c7b4b935766691dce7821902","first_computed_at":"2026-05-18T04:20:04.506414Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:20:04.506414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9kGXant87uz6wtN217eO1RXJdoCjt/BWKDik6Rg1JvyvBzrgzuiMpef1modxS/Bsx+EjdzO6Z63PrAFJ4vubCg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:20:04.507075Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.3587","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5bdedefa9862082c7d55a4003ea5b01fbe32553f130770ef014681f4eb14260a","sha256:bc1ea725d614f57fb2e778e64db45afc9a28f407fdd1c817eb775e0b813c8d62"],"state_sha256":"2f842c634a9e71d7efc8bcf6831710bac9e6f6eec140fd60cbb550c230d80e0f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mndiPW/aMlUvGrgJoVDgI4nRoPwDKVmrBjLtdczxnUR/heIkK8/5ehvF83e8g34CfavRJBn4gQ+PTFevx/SuDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T01:27:00.911780Z","bundle_sha256":"6a35975c8fb0ae3e18a35baa3e06d998442081ecccad67744bab2a76b123210b"}}