Pith Number

pith:6I6IHGG4

pith:1997:6I6IHGG4VU2YCWZLKGQNTDL6OD

not attested not anchored not stored refs pending

The Fermi surface of underdoped high-T_c superconducting cuprates

Lu Yu, Xi Dai, Zhao-Bin Su

arxiv:cond-mat/9702209 v2 · 1997-02-24 · cond-mat.str-el

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6I6IHGG4VU2YCWZLKGQNTDL6OD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T16:03:42.889744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f23c8398dcad35815b2b51a0d98d7e70d43739836c07a8a1c77f4eff48286eab

Aliases

arxiv: cond-mat/9702209 · arxiv_version: cond-mat/9702209v2 · doi: 10.48550/arxiv.cond-mat/9702209 · pith_short_12: 6I6IHGG4VU2Y · pith_short_16: 6I6IHGG4VU2YCWZL · pith_short_8: 6I6IHGG4

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/6I6IHGG4VU2YCWZLKGQNTDL6OD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f23c8398dcad35815b2b51a0d98d7e70d43739836c07a8a1c77f4eff48286eab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a67dad75648e41b1c69d526001d2acb8f2471d969d5135b923551714ffd3a6b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "1997-02-24T04:50:05Z",
    "title_canon_sha256": "0f1d098515604cc7f72d1176fab76c204151a07cb99d39b23fbdce8c0df72a91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9702209",
    "kind": "arxiv",
    "version": 2
  }
}