{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:W75SG5TSOIFEEOJKGPXVR63EHS","short_pith_number":"pith:W75SG5TS","canonical_record":{"source":{"id":"1110.2853","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2011-10-13T07:26:32Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"06fa952847df3a9f99916bbefeaa904ef23261f299afea8965f3915b170c34ae","abstract_canon_sha256":"dc817e0d22804f6b6e1d00f9bd11c57cbae41695d60b916e2e21f011932152d1"},"schema_version":"1.0"},"canonical_sha256":"b7fb237672720a42392a33ef58fb643ca442a61f52208ac8cdf3dab9f88c49c2","source":{"kind":"arxiv","id":"1110.2853","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.2853","created_at":"2026-05-18T03:59:25Z"},{"alias_kind":"arxiv_version","alias_value":"1110.2853v1","created_at":"2026-05-18T03:59:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.2853","created_at":"2026-05-18T03:59:25Z"},{"alias_kind":"pith_short_12","alias_value":"W75SG5TSOIFE","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W75SG5TSOIFEEOJK","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W75SG5TS","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:W75SG5TSOIFEEOJKGPXVR63EHS","target":"record","payload":{"canonical_record":{"source":{"id":"1110.2853","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2011-10-13T07:26:32Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"06fa952847df3a9f99916bbefeaa904ef23261f299afea8965f3915b170c34ae","abstract_canon_sha256":"dc817e0d22804f6b6e1d00f9bd11c57cbae41695d60b916e2e21f011932152d1"},"schema_version":"1.0"},"canonical_sha256":"b7fb237672720a42392a33ef58fb643ca442a61f52208ac8cdf3dab9f88c49c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:59:25.175271Z","signature_b64":"7KpuQg+wB2qwju9BACWQwzkHxA6mSB4SG2IxtXYiXqF+2GQ3FoGy9Q0Qm2oD54d6RClXiyOXdAXLkZIeIvEIDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7fb237672720a42392a33ef58fb643ca442a61f52208ac8cdf3dab9f88c49c2","last_reissued_at":"2026-05-18T03:59:25.174550Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:59:25.174550Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.2853","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:59:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ROTAoQdfNIeD/ncs9q7dErOPAcFy/kpDWDEFw8uknJrNDKOwntFV9y8rE48LAdILGX4w4J7ClwnYyfJJA7hdBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:28:15.377452Z"},"content_sha256":"6ab111890b4b19fe405b7b64ba2617907acfdb2f80af8fd2e57f654f67cdeb61","schema_version":"1.0","event_id":"sha256:6ab111890b4b19fe405b7b64ba2617907acfdb2f80af8fd2e57f654f67cdeb61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:W75SG5TSOIFEEOJKGPXVR63EHS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electronic stress tensor analysis of hydrogenated palladium clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.chem-ph","authors_text":"Akitomo Tachibana, Ayumu Wagatsuma, Chenggang Zhou, Hansong Cheng, Kazuhide Ichikawa, Pawel Szarek","submitted_at":"2011-10-13T07:26:32Z","abstract_excerpt":"We study the chemical bonds of small palladium clusters Pd_n (n=2-9) saturated by hydrogen atoms using electronic stress tensor. Our calculation includes bond orders which are recently proposed based on the stress tensor. It is shown that our bond orders can classify the different types of chemical bonds in those clusters. In particular, we discuss Pd-H bonds associated with the H atoms with high coordination numbers and the difference of H-H bonds in the different Pd clusters from viewpoint of the electronic stress tensor. The notion of \"pseudo-spindle structure\" is proposed as the region bet"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.2853","kind":"arxiv","version":1},"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":"2026-05-18T03:59:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lOrX9kJRf8tmb/PI3UlF7Pk9qFIJnDlB7TqxXpqKcEczPAPDL3OO0JhNMyCTtlbfWJiEAVuD9O0NPAcjFT+9Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:28:15.377810Z"},"content_sha256":"d84c4f2391c89c81f6bfa5716ab3004d0b8cd64c0c08e31acdffe84b4613e5cb","schema_version":"1.0","event_id":"sha256:d84c4f2391c89c81f6bfa5716ab3004d0b8cd64c0c08e31acdffe84b4613e5cb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W75SG5TSOIFEEOJKGPXVR63EHS/bundle.json","state_url":"https://pith.science/pith/W75SG5TSOIFEEOJKGPXVR63EHS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W75SG5TSOIFEEOJKGPXVR63EHS/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":"2026-06-01T03:28:15Z","links":{"resolver":"https://pith.science/pith/W75SG5TSOIFEEOJKGPXVR63EHS","bundle":"https://pith.science/pith/W75SG5TSOIFEEOJKGPXVR63EHS/bundle.json","state":"https://pith.science/pith/W75SG5TSOIFEEOJKGPXVR63EHS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W75SG5TSOIFEEOJKGPXVR63EHS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:W75SG5TSOIFEEOJKGPXVR63EHS","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":"dc817e0d22804f6b6e1d00f9bd11c57cbae41695d60b916e2e21f011932152d1","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2011-10-13T07:26:32Z","title_canon_sha256":"06fa952847df3a9f99916bbefeaa904ef23261f299afea8965f3915b170c34ae"},"schema_version":"1.0","source":{"id":"1110.2853","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.2853","created_at":"2026-05-18T03:59:25Z"},{"alias_kind":"arxiv_version","alias_value":"1110.2853v1","created_at":"2026-05-18T03:59:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.2853","created_at":"2026-05-18T03:59:25Z"},{"alias_kind":"pith_short_12","alias_value":"W75SG5TSOIFE","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W75SG5TSOIFEEOJK","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W75SG5TS","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:d84c4f2391c89c81f6bfa5716ab3004d0b8cd64c0c08e31acdffe84b4613e5cb","target":"graph","created_at":"2026-05-18T03:59:25Z","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 study the chemical bonds of small palladium clusters Pd_n (n=2-9) saturated by hydrogen atoms using electronic stress tensor. Our calculation includes bond orders which are recently proposed based on the stress tensor. It is shown that our bond orders can classify the different types of chemical bonds in those clusters. In particular, we discuss Pd-H bonds associated with the H atoms with high coordination numbers and the difference of H-H bonds in the different Pd clusters from viewpoint of the electronic stress tensor. The notion of \"pseudo-spindle structure\" is proposed as the region bet","authors_text":"Akitomo Tachibana, Ayumu Wagatsuma, Chenggang Zhou, Hansong Cheng, Kazuhide Ichikawa, Pawel Szarek","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2011-10-13T07:26:32Z","title":"Electronic stress tensor analysis of hydrogenated palladium clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.2853","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":"sha256:6ab111890b4b19fe405b7b64ba2617907acfdb2f80af8fd2e57f654f67cdeb61","target":"record","created_at":"2026-05-18T03:59:25Z","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":"dc817e0d22804f6b6e1d00f9bd11c57cbae41695d60b916e2e21f011932152d1","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2011-10-13T07:26:32Z","title_canon_sha256":"06fa952847df3a9f99916bbefeaa904ef23261f299afea8965f3915b170c34ae"},"schema_version":"1.0","source":{"id":"1110.2853","kind":"arxiv","version":1}},"canonical_sha256":"b7fb237672720a42392a33ef58fb643ca442a61f52208ac8cdf3dab9f88c49c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7fb237672720a42392a33ef58fb643ca442a61f52208ac8cdf3dab9f88c49c2","first_computed_at":"2026-05-18T03:59:25.174550Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:59:25.174550Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7KpuQg+wB2qwju9BACWQwzkHxA6mSB4SG2IxtXYiXqF+2GQ3FoGy9Q0Qm2oD54d6RClXiyOXdAXLkZIeIvEIDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:59:25.175271Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.2853","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ab111890b4b19fe405b7b64ba2617907acfdb2f80af8fd2e57f654f67cdeb61","sha256:d84c4f2391c89c81f6bfa5716ab3004d0b8cd64c0c08e31acdffe84b4613e5cb"],"state_sha256":"96460def6073c05bf7f961137b5f9f0b26060de8e23b198e2cdf1b283587b5f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D2MQCRpOpMQogYffa34XS9a7/WnOcvJLeiyNrL5O6GO2GCFdRVRzX8x7wQxSid0sF1cg6AC+AR9O9AwiaXH8DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T03:28:15.379701Z","bundle_sha256":"287889339ab6db3ba93b3803f65e15b5633a04655ce34cda38d37d077fac8057"}}