{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2S3RRMRBWHOQIQCFKTBDT5S3EL","short_pith_number":"pith:2S3RRMRB","canonical_record":{"source":{"id":"1512.05697","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-12-17T17:53:44Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"1c8452b425188934a86c714e395f4ef08dc4a34c3bf4f59ec0e4aeccdcff12cc","abstract_canon_sha256":"d2c27b44d352cea79547a5d77a74139a188152e33c4adbaf4dfb0dca174014fb"},"schema_version":"1.0"},"canonical_sha256":"d4b718b221b1dd04404554c239f65b22fbd27526f82b1c9d39770f53199aeb98","source":{"kind":"arxiv","id":"1512.05697","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05697","created_at":"2026-05-18T01:07:17Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05697v2","created_at":"2026-05-18T01:07:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05697","created_at":"2026-05-18T01:07:17Z"},{"alias_kind":"pith_short_12","alias_value":"2S3RRMRBWHOQ","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2S3RRMRBWHOQIQCF","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2S3RRMRB","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2S3RRMRBWHOQIQCFKTBDT5S3EL","target":"record","payload":{"canonical_record":{"source":{"id":"1512.05697","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-12-17T17:53:44Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"1c8452b425188934a86c714e395f4ef08dc4a34c3bf4f59ec0e4aeccdcff12cc","abstract_canon_sha256":"d2c27b44d352cea79547a5d77a74139a188152e33c4adbaf4dfb0dca174014fb"},"schema_version":"1.0"},"canonical_sha256":"d4b718b221b1dd04404554c239f65b22fbd27526f82b1c9d39770f53199aeb98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:17.206847Z","signature_b64":"1z7yAB7n/2iZktznPI+WE6wYzoFF+ZsTIqJ9K7niyoEe0Q2TkrUwtiNPH4YqnGfnNajcYLU/BX1fYND6F2wvBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4b718b221b1dd04404554c239f65b22fbd27526f82b1c9d39770f53199aeb98","last_reissued_at":"2026-05-18T01:07:17.206351Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:17.206351Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.05697","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:07:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2E2lH9eR1V0he81kozblvLq3QzUC8gSNe9QlV2nQergJ/Kp14SVd4vMNb7E5MzSrJ/r3agIThWMXFQhg1mtSCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T23:40:34.971687Z"},"content_sha256":"fc84fcde9c0a67ffe574b4e4a325bf422b3e5af9f7109b127581114567100605","schema_version":"1.0","event_id":"sha256:fc84fcde9c0a67ffe574b4e4a325bf422b3e5af9f7109b127581114567100605"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2S3RRMRBWHOQIQCFKTBDT5S3EL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Active particles with soft and curved walls: Equation of state, ratchets, and instabilities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft"],"primary_cat":"cond-mat.stat-mech","authors_text":"Alexandre P. Solon, Julien Tailleur, Mehran Kardar, Nikolai Nikola, Rapha\\\"el Voituriez, Yariv Kafri","submitted_at":"2015-12-17T17:53:44Z","abstract_excerpt":"We study, from first principles, the pressure exerted by an active fluid of spherical particles on general boundaries in two dimensions. We show that, despite the non-uniform pressure along curved walls, an equation of state is recovered upon a proper spatial averaging. This holds even in the presence of pairwise interactions between particles or when asymmetric walls induce ratchet currents, which are accompanied by spontaneous shear stresses on the walls. For flexible obstacles, the pressure inhomogeneities lead to a modulational instability as well as to the spontaneous motion of short semi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05697","kind":"arxiv","version":2},"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":"2026-05-18T01:07:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IQx0fjlwazW7/QzrogHWmr7EESKKKhpCooyHh1lk3/bJIwr4Ns+zNNCb/qUVcDwVFBJihMS+PMjtcxTvYbwNCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T23:40:34.972455Z"},"content_sha256":"9978a23ccce327cfad1999a74270157d265a178f3f48f35a08936ae6ff787b35","schema_version":"1.0","event_id":"sha256:9978a23ccce327cfad1999a74270157d265a178f3f48f35a08936ae6ff787b35"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2S3RRMRBWHOQIQCFKTBDT5S3EL/bundle.json","state_url":"https://pith.science/pith/2S3RRMRBWHOQIQCFKTBDT5S3EL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2S3RRMRBWHOQIQCFKTBDT5S3EL/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":"2026-05-29T23:40:34Z","links":{"resolver":"https://pith.science/pith/2S3RRMRBWHOQIQCFKTBDT5S3EL","bundle":"https://pith.science/pith/2S3RRMRBWHOQIQCFKTBDT5S3EL/bundle.json","state":"https://pith.science/pith/2S3RRMRBWHOQIQCFKTBDT5S3EL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2S3RRMRBWHOQIQCFKTBDT5S3EL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2S3RRMRBWHOQIQCFKTBDT5S3EL","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":"d2c27b44d352cea79547a5d77a74139a188152e33c4adbaf4dfb0dca174014fb","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-12-17T17:53:44Z","title_canon_sha256":"1c8452b425188934a86c714e395f4ef08dc4a34c3bf4f59ec0e4aeccdcff12cc"},"schema_version":"1.0","source":{"id":"1512.05697","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05697","created_at":"2026-05-18T01:07:17Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05697v2","created_at":"2026-05-18T01:07:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05697","created_at":"2026-05-18T01:07:17Z"},{"alias_kind":"pith_short_12","alias_value":"2S3RRMRBWHOQ","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2S3RRMRBWHOQIQCF","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2S3RRMRB","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:9978a23ccce327cfad1999a74270157d265a178f3f48f35a08936ae6ff787b35","target":"graph","created_at":"2026-05-18T01:07:17Z","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, from first principles, the pressure exerted by an active fluid of spherical particles on general boundaries in two dimensions. We show that, despite the non-uniform pressure along curved walls, an equation of state is recovered upon a proper spatial averaging. This holds even in the presence of pairwise interactions between particles or when asymmetric walls induce ratchet currents, which are accompanied by spontaneous shear stresses on the walls. For flexible obstacles, the pressure inhomogeneities lead to a modulational instability as well as to the spontaneous motion of short semi","authors_text":"Alexandre P. Solon, Julien Tailleur, Mehran Kardar, Nikolai Nikola, Rapha\\\"el Voituriez, Yariv Kafri","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-12-17T17:53:44Z","title":"Active particles with soft and curved walls: Equation of state, ratchets, and instabilities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05697","kind":"arxiv","version":2},"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:fc84fcde9c0a67ffe574b4e4a325bf422b3e5af9f7109b127581114567100605","target":"record","created_at":"2026-05-18T01:07:17Z","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":"d2c27b44d352cea79547a5d77a74139a188152e33c4adbaf4dfb0dca174014fb","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-12-17T17:53:44Z","title_canon_sha256":"1c8452b425188934a86c714e395f4ef08dc4a34c3bf4f59ec0e4aeccdcff12cc"},"schema_version":"1.0","source":{"id":"1512.05697","kind":"arxiv","version":2}},"canonical_sha256":"d4b718b221b1dd04404554c239f65b22fbd27526f82b1c9d39770f53199aeb98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4b718b221b1dd04404554c239f65b22fbd27526f82b1c9d39770f53199aeb98","first_computed_at":"2026-05-18T01:07:17.206351Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:17.206351Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1z7yAB7n/2iZktznPI+WE6wYzoFF+ZsTIqJ9K7niyoEe0Q2TkrUwtiNPH4YqnGfnNajcYLU/BX1fYND6F2wvBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:17.206847Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.05697","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc84fcde9c0a67ffe574b4e4a325bf422b3e5af9f7109b127581114567100605","sha256:9978a23ccce327cfad1999a74270157d265a178f3f48f35a08936ae6ff787b35"],"state_sha256":"50e99c8749c4ac01681a713448035ab92e26f1227b06ef78e973effcbca7e45b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vdcYOgj2rloDOKocNax2parJ9LjdPA/bCPP2VdKnUtUbT5rEgL+1UztrlUQwPslX7f67IGKmKYbpJryxyJLcBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T23:40:34.976175Z","bundle_sha256":"9e2a151050e86458b1ed1f408d2cf7bf4e9b27f485cdb293ea0a0f6d21715308"}}