{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:AGDY3LCJ4K3DMTPAMM7FNYL46G","short_pith_number":"pith:AGDY3LCJ","canonical_record":{"source":{"id":"1908.03947","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-11T18:42:53Z","cross_cats_sorted":[],"title_canon_sha256":"3d149929c73ae627c346962a50f65a8f14b8833c8ddb811e02f54f50a67e6b0f","abstract_canon_sha256":"c986b31c55365804384a7eaaab2a074d100a90c735ffb4ad360e745f0aa71454"},"schema_version":"1.0"},"canonical_sha256":"01878dac49e2b6364de0633e56e17cf18a2715773cac4d2c7739bd7e0b621f86","source":{"kind":"arxiv","id":"1908.03947","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.03947","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"arxiv_version","alias_value":"1908.03947v1","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.03947","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"pith_short_12","alias_value":"AGDY3LCJ4K3D","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"pith_short_16","alias_value":"AGDY3LCJ4K3DMTPA","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"pith_short_8","alias_value":"AGDY3LCJ","created_at":"2026-07-04T23:53:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:AGDY3LCJ4K3DMTPAMM7FNYL46G","target":"record","payload":{"canonical_record":{"source":{"id":"1908.03947","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-11T18:42:53Z","cross_cats_sorted":[],"title_canon_sha256":"3d149929c73ae627c346962a50f65a8f14b8833c8ddb811e02f54f50a67e6b0f","abstract_canon_sha256":"c986b31c55365804384a7eaaab2a074d100a90c735ffb4ad360e745f0aa71454"},"schema_version":"1.0"},"canonical_sha256":"01878dac49e2b6364de0633e56e17cf18a2715773cac4d2c7739bd7e0b621f86","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:53:19.580691Z","signature_b64":"WzPEq2wAo28usHm5bn9FBbJXvchqxAtShRxuvAXqLd8Xpi8s1u8vTqDD82pgzQ1CocjlEJzdJKxQyl4o0GbrAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01878dac49e2b6364de0633e56e17cf18a2715773cac4d2c7739bd7e0b621f86","last_reissued_at":"2026-07-04T23:53:19.580303Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:53:19.580303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.03947","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":"2026-07-04T23:53:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uVotgc4i0xmPSBE9R0QOw2hFR8Qe8L5v9V8wuaJ7sb0CZhlyRjzNcJHjYmvOsUVP9CaLW9PAUQH7d6PQKegABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:14:02.476794Z"},"content_sha256":"2577061cc9500c06bc99dd1bb3c65534140ac57a3eacba902897ae638ecf0d71","schema_version":"1.0","event_id":"sha256:2577061cc9500c06bc99dd1bb3c65534140ac57a3eacba902897ae638ecf0d71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:AGDY3LCJ4K3DMTPAMM7FNYL46G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum-assisted finite-element design optimization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Arne-Christian Voigt, Carsten Othmer, David Von Dollen, Dyon van Vreumingen, Florian Neukart, Michael Hartmann, Thomas B\\\"ack","submitted_at":"2019-08-11T18:42:53Z","abstract_excerpt":"Quantum annealing devices such as the ones produced by D-Wave systems are typically used for solving optimization and sampling tasks, and in both academia and industry the characterization of their usefulness is subject to active research. Any problem that can naturally be described as a weighted, undirected graph may be a particularly interesting candidate, since such a problem may be formulated a as quadratic unconstrained binary optimization (QUBO) instance, which is solvable on D-Wave's Chimera graph architecture. In this paper, we introduce a quantum-assisted finite-element method for des"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.03947","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.03947/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T23:53:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LNfSF3LgPxOP88171zjSNoKpJIApU7zcj2Vbj/Ry1bz5j/ffs6eRStmP0y0GLSsIlnwSce1mlXGWB574fwKtAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:14:02.477163Z"},"content_sha256":"9529b5716673a398b5b4bd653aacf12e0e36872f5a8be8a7f59369bdcae98a3e","schema_version":"1.0","event_id":"sha256:9529b5716673a398b5b4bd653aacf12e0e36872f5a8be8a7f59369bdcae98a3e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AGDY3LCJ4K3DMTPAMM7FNYL46G/bundle.json","state_url":"https://pith.science/pith/AGDY3LCJ4K3DMTPAMM7FNYL46G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AGDY3LCJ4K3DMTPAMM7FNYL46G/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":"2026-07-07T06:14:02Z","links":{"resolver":"https://pith.science/pith/AGDY3LCJ4K3DMTPAMM7FNYL46G","bundle":"https://pith.science/pith/AGDY3LCJ4K3DMTPAMM7FNYL46G/bundle.json","state":"https://pith.science/pith/AGDY3LCJ4K3DMTPAMM7FNYL46G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AGDY3LCJ4K3DMTPAMM7FNYL46G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:AGDY3LCJ4K3DMTPAMM7FNYL46G","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":"c986b31c55365804384a7eaaab2a074d100a90c735ffb4ad360e745f0aa71454","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-11T18:42:53Z","title_canon_sha256":"3d149929c73ae627c346962a50f65a8f14b8833c8ddb811e02f54f50a67e6b0f"},"schema_version":"1.0","source":{"id":"1908.03947","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.03947","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"arxiv_version","alias_value":"1908.03947v1","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.03947","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"pith_short_12","alias_value":"AGDY3LCJ4K3D","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"pith_short_16","alias_value":"AGDY3LCJ4K3DMTPA","created_at":"2026-07-04T23:53:19Z"},{"alias_kind":"pith_short_8","alias_value":"AGDY3LCJ","created_at":"2026-07-04T23:53:19Z"}],"graph_snapshots":[{"event_id":"sha256:9529b5716673a398b5b4bd653aacf12e0e36872f5a8be8a7f59369bdcae98a3e","target":"graph","created_at":"2026-07-04T23:53:19Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1908.03947/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum annealing devices such as the ones produced by D-Wave systems are typically used for solving optimization and sampling tasks, and in both academia and industry the characterization of their usefulness is subject to active research. Any problem that can naturally be described as a weighted, undirected graph may be a particularly interesting candidate, since such a problem may be formulated a as quadratic unconstrained binary optimization (QUBO) instance, which is solvable on D-Wave's Chimera graph architecture. In this paper, we introduce a quantum-assisted finite-element method for des","authors_text":"Arne-Christian Voigt, Carsten Othmer, David Von Dollen, Dyon van Vreumingen, Florian Neukart, Michael Hartmann, Thomas B\\\"ack","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-11T18:42:53Z","title":"Quantum-assisted finite-element design optimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.03947","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":"sha256:2577061cc9500c06bc99dd1bb3c65534140ac57a3eacba902897ae638ecf0d71","target":"record","created_at":"2026-07-04T23:53:19Z","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":"c986b31c55365804384a7eaaab2a074d100a90c735ffb4ad360e745f0aa71454","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-11T18:42:53Z","title_canon_sha256":"3d149929c73ae627c346962a50f65a8f14b8833c8ddb811e02f54f50a67e6b0f"},"schema_version":"1.0","source":{"id":"1908.03947","kind":"arxiv","version":1}},"canonical_sha256":"01878dac49e2b6364de0633e56e17cf18a2715773cac4d2c7739bd7e0b621f86","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"01878dac49e2b6364de0633e56e17cf18a2715773cac4d2c7739bd7e0b621f86","first_computed_at":"2026-07-04T23:53:19.580303Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:53:19.580303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WzPEq2wAo28usHm5bn9FBbJXvchqxAtShRxuvAXqLd8Xpi8s1u8vTqDD82pgzQ1CocjlEJzdJKxQyl4o0GbrAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T23:53:19.580691Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.03947","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2577061cc9500c06bc99dd1bb3c65534140ac57a3eacba902897ae638ecf0d71","sha256:9529b5716673a398b5b4bd653aacf12e0e36872f5a8be8a7f59369bdcae98a3e"],"state_sha256":"094b08fb245c5bd29cf5bac22f82a87c443c89b72ef7a382f84c7eb706448646"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qs0hsCcNF0rk1vOEBLpqu92VkA6d8kGtEARzJVQZbTW4JQoxDul0L45q8h7RbTgE1hTJTdmMv1jdXcQ4yffMBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T06:14:02.479261Z","bundle_sha256":"9db771ecf11d8c2aebef5f52977fc049a0a2b396dbe6afbdf633c3c6986cfd43"}}