{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QTSLMDE33GGBBFHUAOXDCPNS6C","short_pith_number":"pith:QTSLMDE3","canonical_record":{"source":{"id":"1706.00274","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-06-01T16:11:29Z","cross_cats_sorted":[],"title_canon_sha256":"00caf787d1d3e9330dafe0e9263b01468fb2cf8a674fb9706acd473929b5ff3d","abstract_canon_sha256":"1b892586cbfae93c522292dfcbc8d1bb8479b520721cfc9b488ba98a43877708"},"schema_version":"1.0"},"canonical_sha256":"84e4b60c9bd98c1094f403ae313db2f0a2e531d76d053c2ddf9f223c5f3a8b14","source":{"kind":"arxiv","id":"1706.00274","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.00274","created_at":"2026-05-18T00:27:04Z"},{"alias_kind":"arxiv_version","alias_value":"1706.00274v2","created_at":"2026-05-18T00:27:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.00274","created_at":"2026-05-18T00:27:04Z"},{"alias_kind":"pith_short_12","alias_value":"QTSLMDE33GGB","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QTSLMDE33GGBBFHU","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QTSLMDE3","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QTSLMDE33GGBBFHUAOXDCPNS6C","target":"record","payload":{"canonical_record":{"source":{"id":"1706.00274","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-06-01T16:11:29Z","cross_cats_sorted":[],"title_canon_sha256":"00caf787d1d3e9330dafe0e9263b01468fb2cf8a674fb9706acd473929b5ff3d","abstract_canon_sha256":"1b892586cbfae93c522292dfcbc8d1bb8479b520721cfc9b488ba98a43877708"},"schema_version":"1.0"},"canonical_sha256":"84e4b60c9bd98c1094f403ae313db2f0a2e531d76d053c2ddf9f223c5f3a8b14","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:04.636062Z","signature_b64":"mSaXp8isMLK7/X5rc5MGobxnZCGv0TKbonYJRFXlo9NWzfPvg+w6+TjegF6NU/O4GCPAzMAr0NmYmVi5/foyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84e4b60c9bd98c1094f403ae313db2f0a2e531d76d053c2ddf9f223c5f3a8b14","last_reissued_at":"2026-05-18T00:27:04.635521Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:04.635521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.00274","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":"2026-05-18T00:27:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BKszutFD/GFxY2lGbTIGh5Q33Eqh4PMQgTsF6TeO7rtH+ImMgwIN19Eu478Ku9Z5mT9KgNkrkZsmqGp4uZFvAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T23:07:40.908845Z"},"content_sha256":"ee215e6295f75702d05fac3a36f2faa354c0f494931ed720d7dc4af1beef9365","schema_version":"1.0","event_id":"sha256:ee215e6295f75702d05fac3a36f2faa354c0f494931ed720d7dc4af1beef9365"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QTSLMDE33GGBBFHUAOXDCPNS6C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards a Java Subtyping Operad","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.PL","authors_text":"Moez A. AbdelGawad","submitted_at":"2017-06-01T16:11:29Z","abstract_excerpt":"The subtyping relation in Java exhibits self-similarity. The self-similarity in Java subtyping is interesting and intricate due to the existence of wildcard types and, accordingly, the existence of three subtyping rules for generic types: covariant subtyping, contravariant subtyping and invariant subtyping. Supporting bounded type variables also adds to the complexity of the subtyping relation in Java and in other generic nominally-typed OO languages such as C# and Scala. In this paper we explore defining an operad to model the construction of the subtyping relation in Java and in similar gene"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.00274","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":"2026-05-18T00:27:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rN0xiGmf2xjjj0ucFbxvM/xOKw6BXHHuI3X+mETK4TAaA0mjrpI/Gp8hyXh8nEyPIwZF/P9y7ezc+CScUrPGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T23:07:40.909185Z"},"content_sha256":"937ecc045e7c01e766aab53897f9ddf6ef94a2f7a94b76f9272dff18d8b39f05","schema_version":"1.0","event_id":"sha256:937ecc045e7c01e766aab53897f9ddf6ef94a2f7a94b76f9272dff18d8b39f05"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QTSLMDE33GGBBFHUAOXDCPNS6C/bundle.json","state_url":"https://pith.science/pith/QTSLMDE33GGBBFHUAOXDCPNS6C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QTSLMDE33GGBBFHUAOXDCPNS6C/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":"2026-05-28T23:07:40Z","links":{"resolver":"https://pith.science/pith/QTSLMDE33GGBBFHUAOXDCPNS6C","bundle":"https://pith.science/pith/QTSLMDE33GGBBFHUAOXDCPNS6C/bundle.json","state":"https://pith.science/pith/QTSLMDE33GGBBFHUAOXDCPNS6C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QTSLMDE33GGBBFHUAOXDCPNS6C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QTSLMDE33GGBBFHUAOXDCPNS6C","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":"1b892586cbfae93c522292dfcbc8d1bb8479b520721cfc9b488ba98a43877708","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-06-01T16:11:29Z","title_canon_sha256":"00caf787d1d3e9330dafe0e9263b01468fb2cf8a674fb9706acd473929b5ff3d"},"schema_version":"1.0","source":{"id":"1706.00274","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.00274","created_at":"2026-05-18T00:27:04Z"},{"alias_kind":"arxiv_version","alias_value":"1706.00274v2","created_at":"2026-05-18T00:27:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.00274","created_at":"2026-05-18T00:27:04Z"},{"alias_kind":"pith_short_12","alias_value":"QTSLMDE33GGB","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QTSLMDE33GGBBFHU","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QTSLMDE3","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:937ecc045e7c01e766aab53897f9ddf6ef94a2f7a94b76f9272dff18d8b39f05","target":"graph","created_at":"2026-05-18T00:27:04Z","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":"The subtyping relation in Java exhibits self-similarity. The self-similarity in Java subtyping is interesting and intricate due to the existence of wildcard types and, accordingly, the existence of three subtyping rules for generic types: covariant subtyping, contravariant subtyping and invariant subtyping. Supporting bounded type variables also adds to the complexity of the subtyping relation in Java and in other generic nominally-typed OO languages such as C# and Scala. In this paper we explore defining an operad to model the construction of the subtyping relation in Java and in similar gene","authors_text":"Moez A. AbdelGawad","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-06-01T16:11:29Z","title":"Towards a Java Subtyping Operad"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.00274","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:ee215e6295f75702d05fac3a36f2faa354c0f494931ed720d7dc4af1beef9365","target":"record","created_at":"2026-05-18T00:27:04Z","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":"1b892586cbfae93c522292dfcbc8d1bb8479b520721cfc9b488ba98a43877708","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-06-01T16:11:29Z","title_canon_sha256":"00caf787d1d3e9330dafe0e9263b01468fb2cf8a674fb9706acd473929b5ff3d"},"schema_version":"1.0","source":{"id":"1706.00274","kind":"arxiv","version":2}},"canonical_sha256":"84e4b60c9bd98c1094f403ae313db2f0a2e531d76d053c2ddf9f223c5f3a8b14","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84e4b60c9bd98c1094f403ae313db2f0a2e531d76d053c2ddf9f223c5f3a8b14","first_computed_at":"2026-05-18T00:27:04.635521Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:04.635521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mSaXp8isMLK7/X5rc5MGobxnZCGv0TKbonYJRFXlo9NWzfPvg+w6+TjegF6NU/O4GCPAzMAr0NmYmVi5/foyAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:04.636062Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.00274","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee215e6295f75702d05fac3a36f2faa354c0f494931ed720d7dc4af1beef9365","sha256:937ecc045e7c01e766aab53897f9ddf6ef94a2f7a94b76f9272dff18d8b39f05"],"state_sha256":"ae19a2579dabdbfac86f134a8839e476f5b51be299ff9168cd8f8a111447f7c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XZt2a2dJKxAXdS6AI+1iMHRWHq59+tZWpd05XGX1hRJkfrf/X1XunCmdBbUIoAHJEM+vA6Sgxx0NuXf6D6bsCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T23:07:40.911084Z","bundle_sha256":"076f651f1ae3e4b90c94f4e92261bd36503e0af558f005f643800214c789ce16"}}