{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VHMABASHC6UZRE4S3ENOI63UED","short_pith_number":"pith:VHMABASH","canonical_record":{"source":{"id":"1709.07241","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2017-09-21T10:03:07Z","cross_cats_sorted":[],"title_canon_sha256":"c211b38ab90c2e6462ab4d5ce10cdc00f2fef79c4059ec5edbe01558126e56d8","abstract_canon_sha256":"a67c319b0f69689f69ac3b169e8227f3d1230cc1d8d3d4dbc5658bcf0b90fd25"},"schema_version":"1.0"},"canonical_sha256":"a9d800824717a9989392d91ae47b7420c613c121aef1bd155ffbeec3fe18b6d4","source":{"kind":"arxiv","id":"1709.07241","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.07241","created_at":"2026-05-18T00:34:36Z"},{"alias_kind":"arxiv_version","alias_value":"1709.07241v1","created_at":"2026-05-18T00:34:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.07241","created_at":"2026-05-18T00:34:36Z"},{"alias_kind":"pith_short_12","alias_value":"VHMABASHC6UZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VHMABASHC6UZRE4S","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VHMABASH","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VHMABASHC6UZRE4S3ENOI63UED","target":"record","payload":{"canonical_record":{"source":{"id":"1709.07241","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2017-09-21T10:03:07Z","cross_cats_sorted":[],"title_canon_sha256":"c211b38ab90c2e6462ab4d5ce10cdc00f2fef79c4059ec5edbe01558126e56d8","abstract_canon_sha256":"a67c319b0f69689f69ac3b169e8227f3d1230cc1d8d3d4dbc5658bcf0b90fd25"},"schema_version":"1.0"},"canonical_sha256":"a9d800824717a9989392d91ae47b7420c613c121aef1bd155ffbeec3fe18b6d4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:34:36.224042Z","signature_b64":"NWQIFDGBUIO9w7/Tr1DHh5ObE6TRIAqv/a+eYS06g0/CVoC4N5R+mFbG33AV/ngSybe+2UaVssHZLaA8O17vDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a9d800824717a9989392d91ae47b7420c613c121aef1bd155ffbeec3fe18b6d4","last_reissued_at":"2026-05-18T00:34:36.223630Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:34:36.223630Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.07241","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":"2026-05-18T00:34:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FG+cn2uBHtBFbt2vZy7kSK99i9zDnZC8CBSG43RWFHR4PwWP5dncAB+Qr6OPa5Xc1NRpaIdhsTMddZCdKnuFCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:40:52.924689Z"},"content_sha256":"4af435e0469de3726947a849d59c36fde5b9a1ff39af07b65f52b64dc40d45cb","schema_version":"1.0","event_id":"sha256:4af435e0469de3726947a849d59c36fde5b9a1ff39af07b65f52b64dc40d45cb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VHMABASHC6UZRE4S3ENOI63UED","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Satisfiability Modulo Theory based Methodology for Floorplanning in VLSI Circuits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AR","authors_text":"Anand Ratna, Suchandra Banerjee, Suchismita Roy","submitted_at":"2017-09-21T10:03:07Z","abstract_excerpt":"This paper proposes a Satisfiability Modulo Theory based formulation for floorplanning in VLSI circuits. The proposed approach allows a number of fixed blocks to be placed within a layout region without overlapping and at the same time minimizing the area of the layout region. The proposed approach is extended to allow a number of fixed blocks with ability to rotate and flexible blocks (with variable width and height) to be placed within a layout without overlap. Our target in all cases is reduction in area occupied on a chip which is of vital importance in obtaining a good circuit design. Sat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.07241","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":"2026-05-18T00:34:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CFglsrqYQY79t6THNB/SRy+L68PowseLPCI6huU2FlMg9DHXWetsaMTWlCY9X1DAJPw/Mo8tBkyiH54B0NoxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:40:52.925046Z"},"content_sha256":"685423d5c11191809db34d627a053b187c68a51a1f1fa6d17542fe7484ccde5f","schema_version":"1.0","event_id":"sha256:685423d5c11191809db34d627a053b187c68a51a1f1fa6d17542fe7484ccde5f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VHMABASHC6UZRE4S3ENOI63UED/bundle.json","state_url":"https://pith.science/pith/VHMABASHC6UZRE4S3ENOI63UED/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VHMABASHC6UZRE4S3ENOI63UED/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":"2026-06-02T21:40:52Z","links":{"resolver":"https://pith.science/pith/VHMABASHC6UZRE4S3ENOI63UED","bundle":"https://pith.science/pith/VHMABASHC6UZRE4S3ENOI63UED/bundle.json","state":"https://pith.science/pith/VHMABASHC6UZRE4S3ENOI63UED/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VHMABASHC6UZRE4S3ENOI63UED/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VHMABASHC6UZRE4S3ENOI63UED","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":"a67c319b0f69689f69ac3b169e8227f3d1230cc1d8d3d4dbc5658bcf0b90fd25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2017-09-21T10:03:07Z","title_canon_sha256":"c211b38ab90c2e6462ab4d5ce10cdc00f2fef79c4059ec5edbe01558126e56d8"},"schema_version":"1.0","source":{"id":"1709.07241","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.07241","created_at":"2026-05-18T00:34:36Z"},{"alias_kind":"arxiv_version","alias_value":"1709.07241v1","created_at":"2026-05-18T00:34:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.07241","created_at":"2026-05-18T00:34:36Z"},{"alias_kind":"pith_short_12","alias_value":"VHMABASHC6UZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VHMABASHC6UZRE4S","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VHMABASH","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:685423d5c11191809db34d627a053b187c68a51a1f1fa6d17542fe7484ccde5f","target":"graph","created_at":"2026-05-18T00:34:36Z","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":"This paper proposes a Satisfiability Modulo Theory based formulation for floorplanning in VLSI circuits. The proposed approach allows a number of fixed blocks to be placed within a layout region without overlapping and at the same time minimizing the area of the layout region. The proposed approach is extended to allow a number of fixed blocks with ability to rotate and flexible blocks (with variable width and height) to be placed within a layout without overlap. Our target in all cases is reduction in area occupied on a chip which is of vital importance in obtaining a good circuit design. Sat","authors_text":"Anand Ratna, Suchandra Banerjee, Suchismita Roy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2017-09-21T10:03:07Z","title":"Satisfiability Modulo Theory based Methodology for Floorplanning in VLSI Circuits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.07241","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":"sha256:4af435e0469de3726947a849d59c36fde5b9a1ff39af07b65f52b64dc40d45cb","target":"record","created_at":"2026-05-18T00:34:36Z","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":"a67c319b0f69689f69ac3b169e8227f3d1230cc1d8d3d4dbc5658bcf0b90fd25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2017-09-21T10:03:07Z","title_canon_sha256":"c211b38ab90c2e6462ab4d5ce10cdc00f2fef79c4059ec5edbe01558126e56d8"},"schema_version":"1.0","source":{"id":"1709.07241","kind":"arxiv","version":1}},"canonical_sha256":"a9d800824717a9989392d91ae47b7420c613c121aef1bd155ffbeec3fe18b6d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9d800824717a9989392d91ae47b7420c613c121aef1bd155ffbeec3fe18b6d4","first_computed_at":"2026-05-18T00:34:36.223630Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:34:36.223630Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NWQIFDGBUIO9w7/Tr1DHh5ObE6TRIAqv/a+eYS06g0/CVoC4N5R+mFbG33AV/ngSybe+2UaVssHZLaA8O17vDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:34:36.224042Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.07241","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4af435e0469de3726947a849d59c36fde5b9a1ff39af07b65f52b64dc40d45cb","sha256:685423d5c11191809db34d627a053b187c68a51a1f1fa6d17542fe7484ccde5f"],"state_sha256":"07dd238696d9d19eca5005e1e616b68093fff3b5ba9d7bb14eb98649701ba49e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Bt5jwTma2TH6w/MbRDNoK9Lwv16fAqnYAPwHtyvOH2C+wjOb+657e6jEXvEgaZ9tt6M960J6kUWxhECn87ZBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:40:52.927182Z","bundle_sha256":"0a0f9573196dcc3dfd14cf5e6dab5bfb0d0d96584f31bd9f185c7b832ac90e81"}}