{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:C7PQRI3IYWYE7U5OORQNBNR7JD","short_pith_number":"pith:C7PQRI3I","canonical_record":{"source":{"id":"1210.2386","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-08T19:46:41Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"c9c8bb8258b75578d76814d743e43fe98612a2243908b355f155ccab99f8ca67","abstract_canon_sha256":"424a784aa6c635d388c2d159f8c8452b6dbeb1fb8f372eddc39deb29c8b7f459"},"schema_version":"1.0"},"canonical_sha256":"17df08a368c5b04fd3ae7460d0b63f48cd21f85dd986ce1b3dde1a56554c3ca4","source":{"kind":"arxiv","id":"1210.2386","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2386","created_at":"2026-05-18T03:00:59Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2386v2","created_at":"2026-05-18T03:00:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2386","created_at":"2026-05-18T03:00:59Z"},{"alias_kind":"pith_short_12","alias_value":"C7PQRI3IYWYE","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"C7PQRI3IYWYE7U5O","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"C7PQRI3I","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:C7PQRI3IYWYE7U5OORQNBNR7JD","target":"record","payload":{"canonical_record":{"source":{"id":"1210.2386","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-08T19:46:41Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"c9c8bb8258b75578d76814d743e43fe98612a2243908b355f155ccab99f8ca67","abstract_canon_sha256":"424a784aa6c635d388c2d159f8c8452b6dbeb1fb8f372eddc39deb29c8b7f459"},"schema_version":"1.0"},"canonical_sha256":"17df08a368c5b04fd3ae7460d0b63f48cd21f85dd986ce1b3dde1a56554c3ca4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:00:59.182746Z","signature_b64":"+n/xwO04HwURAyBXTb2cbx0YXcSHL3BbZpwwtMuK347t7AVTBVpVXNUw9yOSPVFTlAbS6HxdLrPtKimM5TG8CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17df08a368c5b04fd3ae7460d0b63f48cd21f85dd986ce1b3dde1a56554c3ca4","last_reissued_at":"2026-05-18T03:00:59.182257Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:00:59.182257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.2386","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":"2026-05-18T03:00:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G0Ooqf+7JWliZh39W2yhy3bDsyigTEBcdfV/3fI3IoNwJ4gLopWOiqindZfxMRdXimcD9ZBa6VIaDk3Hky3GCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T05:25:43.602637Z"},"content_sha256":"6238a148315187b781ec13caf580ff55ed18db346cd937bf6acc6a23de2e71e3","schema_version":"1.0","event_id":"sha256:6238a148315187b781ec13caf580ff55ed18db346cd937bf6acc6a23de2e71e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:C7PQRI3IYWYE7U5OORQNBNR7JD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Valley Degenerate 2D Electrons in the Lowest Landau Level","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"B. E. Kane, Binhui Hu, S. H. Brown, Tomasz M. Kott","submitted_at":"2012-10-08T19:46:41Z","abstract_excerpt":"We report low temperature magnetotransport measurements on a high mobility (\\mu=325,000 cm^2/V sec) 2D electron system on a H-terminated Si(111) surface. While low magnetic field data indicate a six-fold valley degenerate system, we observe the integral quantum Hall effect at all filling factors \\nu<=6 and find that \\nu=2 develops in an unusually narrow temperature range. An extended, exclusively even numerator, fractional quantum Hall hierarchy occurs surrounding \\nu=3/2, consistent with two-fold valley-degenerate composite fermions (CFs). We determine activation energies and estimate the CF "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2386","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":"2026-05-18T03:00:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"24Dy/QqrzHhd8uR2yIhIf7VFWwZZGDAQJ8nl/Md2pJEa8n+5FzN3n+0qEsa8KqWuUs52XTQaB2x5ejFiHR4EBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T05:25:43.602991Z"},"content_sha256":"f865202eb72d6870e8a00b95224b45984dc83eea1b0a657d4c2433c5c970b5cb","schema_version":"1.0","event_id":"sha256:f865202eb72d6870e8a00b95224b45984dc83eea1b0a657d4c2433c5c970b5cb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C7PQRI3IYWYE7U5OORQNBNR7JD/bundle.json","state_url":"https://pith.science/pith/C7PQRI3IYWYE7U5OORQNBNR7JD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C7PQRI3IYWYE7U5OORQNBNR7JD/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":"2026-06-29T05:25:43Z","links":{"resolver":"https://pith.science/pith/C7PQRI3IYWYE7U5OORQNBNR7JD","bundle":"https://pith.science/pith/C7PQRI3IYWYE7U5OORQNBNR7JD/bundle.json","state":"https://pith.science/pith/C7PQRI3IYWYE7U5OORQNBNR7JD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C7PQRI3IYWYE7U5OORQNBNR7JD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:C7PQRI3IYWYE7U5OORQNBNR7JD","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":"424a784aa6c635d388c2d159f8c8452b6dbeb1fb8f372eddc39deb29c8b7f459","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-08T19:46:41Z","title_canon_sha256":"c9c8bb8258b75578d76814d743e43fe98612a2243908b355f155ccab99f8ca67"},"schema_version":"1.0","source":{"id":"1210.2386","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2386","created_at":"2026-05-18T03:00:59Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2386v2","created_at":"2026-05-18T03:00:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2386","created_at":"2026-05-18T03:00:59Z"},{"alias_kind":"pith_short_12","alias_value":"C7PQRI3IYWYE","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"C7PQRI3IYWYE7U5O","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"C7PQRI3I","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:f865202eb72d6870e8a00b95224b45984dc83eea1b0a657d4c2433c5c970b5cb","target":"graph","created_at":"2026-05-18T03:00:59Z","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 report low temperature magnetotransport measurements on a high mobility (\\mu=325,000 cm^2/V sec) 2D electron system on a H-terminated Si(111) surface. While low magnetic field data indicate a six-fold valley degenerate system, we observe the integral quantum Hall effect at all filling factors \\nu<=6 and find that \\nu=2 develops in an unusually narrow temperature range. An extended, exclusively even numerator, fractional quantum Hall hierarchy occurs surrounding \\nu=3/2, consistent with two-fold valley-degenerate composite fermions (CFs). We determine activation energies and estimate the CF ","authors_text":"B. E. Kane, Binhui Hu, S. H. Brown, Tomasz M. Kott","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-08T19:46:41Z","title":"Valley Degenerate 2D Electrons in the Lowest Landau Level"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2386","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":"sha256:6238a148315187b781ec13caf580ff55ed18db346cd937bf6acc6a23de2e71e3","target":"record","created_at":"2026-05-18T03:00:59Z","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":"424a784aa6c635d388c2d159f8c8452b6dbeb1fb8f372eddc39deb29c8b7f459","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-08T19:46:41Z","title_canon_sha256":"c9c8bb8258b75578d76814d743e43fe98612a2243908b355f155ccab99f8ca67"},"schema_version":"1.0","source":{"id":"1210.2386","kind":"arxiv","version":2}},"canonical_sha256":"17df08a368c5b04fd3ae7460d0b63f48cd21f85dd986ce1b3dde1a56554c3ca4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17df08a368c5b04fd3ae7460d0b63f48cd21f85dd986ce1b3dde1a56554c3ca4","first_computed_at":"2026-05-18T03:00:59.182257Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:59.182257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+n/xwO04HwURAyBXTb2cbx0YXcSHL3BbZpwwtMuK347t7AVTBVpVXNUw9yOSPVFTlAbS6HxdLrPtKimM5TG8CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:59.182746Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.2386","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6238a148315187b781ec13caf580ff55ed18db346cd937bf6acc6a23de2e71e3","sha256:f865202eb72d6870e8a00b95224b45984dc83eea1b0a657d4c2433c5c970b5cb"],"state_sha256":"ac2c66af139a9b4eb6aa8a7bc636c16aea3739a9051d21cfc6e4cdf206346d98"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HaQw35xvWDgoq54uGtxniUpQS9zn6rmgybncc+3ir9+R0VY0mXR1CYu2E7VjfZMSZ4AK3CEyq8NNsTRjwdZdAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T05:25:43.604852Z","bundle_sha256":"2cd19be339a907a1d61f34986b0fc5930b87b0b4ce30bf9fce9ae06c3d52f2dc"}}