Pith Number

pith:QPTD2IEW

pith:1998:QPTD2IEWDUDBKXYAQAPVXLOSUY

not attested not anchored not stored refs pending

The N-Chain Hubbard model in the Composite Operator Method

A. Avella (1), F. Mancini (1), India), Italy; (2) IMSC, Madras, M. M. Sanchez (1), R. Sridhar (2) ((1) University of Salerno

arxiv:cond-mat/9807355 v1 · 1998-07-27 · 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{QPTD2IEWDUDBKXYAQAPVXLOSUY}

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	2026-07-04T14:23:10.766548Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83e63d20961d06155f00801f5badd2a621cd0167c3fcc1cfd02e9a912f7f475e

Aliases

arxiv: cond-mat/9807355 · arxiv_version: cond-mat/9807355v1 · doi: 10.48550/arxiv.cond-mat/9807355 · pith_short_12: QPTD2IEWDUDB · pith_short_16: QPTD2IEWDUDBKXYA · pith_short_8: QPTD2IEW

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/QPTD2IEWDUDBKXYAQAPVXLOSUY \
  | 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: 83e63d20961d06155f00801f5badd2a621cd0167c3fcc1cfd02e9a912f7f475e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4bd49bb26ebd755b3e08fa17a1ada0fda008c13292780d6a2c641634de3c2c2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "1998-07-27T14:34:27Z",
    "title_canon_sha256": "a99ee91bcf7645c75cf80b803c4ac3150a530b38c71f3809e3c28ab7e4e3333f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9807355",
    "kind": "arxiv",
    "version": 1
  }
}