Pith Number

pith:NQKZ2DXA

pith:1993:NQKZ2DXA6ULLWGGFXXWVEVUTVD

not attested not anchored not stored refs pending

Temperature Derivative of the Superfluid Density in the Attractive Hubbard model

D.J. Scalapino, F.F. Assaad, W. Hanke

arxiv:cond-mat/9310025 v1 · 1993-10-13 · cond-mat

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQKZ2DXA6ULLWGGFXXWVEVUTVD}

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	2026-07-04T15:55:34.680439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c159d0ee0f516bb18c5bded525693a8f7fe6a9c9b2ea17fce5d63de9663d742

Aliases

arxiv: cond-mat/9310025 · arxiv_version: cond-mat/9310025v1 · doi: 10.48550/arxiv.cond-mat/9310025 · pith_short_12: NQKZ2DXA6ULL · pith_short_16: NQKZ2DXA6ULLWGGF · pith_short_8: NQKZ2DXA

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/NQKZ2DXA6ULLWGGFXXWVEVUTVD \
  | 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: 6c159d0ee0f516bb18c5bded525693a8f7fe6a9c9b2ea17fce5d63de9663d742

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec8feebbcf1ab71353e974d7453c747c18b2ed60f12aa64a98be43b3beec0077",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat",
    "submitted_at": "1993-10-13T17:33:00Z",
    "title_canon_sha256": "af8f212a0e23061d0804185faa13e9e44412104da54e5085b8a2b253b4a40b51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9310025",
    "kind": "arxiv",
    "version": 1
  }
}