Pith Number

pith:NPC3OPVU

pith:2011:NPC3OPVU4QYLRB5WVHEBZ7ALW5

not attested not anchored not stored refs pending

A new transfer-matrix algorithm for exact enumerations: Self-avoiding polygons on the square lattice

Iwan Jensen, Nathan Clisby

arxiv:1111.5877 v1 · 2011-11-25 · math-ph · cond-mat.stat-mech · math.CO · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPC3OPVU4QYLRB5WVHEBZ7ALW5}

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	2026-05-18T01:59:25.591363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bc5b73eb4e430b887b6a9c81cfc0bb76bfd0a63a96b3a5426deaaca5debdd76

Aliases

arxiv: 1111.5877 · arxiv_version: 1111.5877v1 · doi: 10.48550/arxiv.1111.5877 · pith_short_12: NPC3OPVU4QYL · pith_short_16: NPC3OPVU4QYLRB5W · pith_short_8: NPC3OPVU

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/NPC3OPVU4QYLRB5WVHEBZ7ALW5 \
  | 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: 6bc5b73eb4e430b887b6a9c81cfc0bb76bfd0a63a96b3a5426deaaca5debdd76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54bff41182d32c7ccd0a06baafe7fff93f9d2074f76af9f4c4e17f659f01021a",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "math.CO",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2011-11-25T01:09:34Z",
    "title_canon_sha256": "0e8141935b8043814525e26c71a1fa036b9ea6693091a76237c99b72b95c1717"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5877",
    "kind": "arxiv",
    "version": 1
  }
}