Pith Number

pith:74W2IQBW

pith:2013:74W2IQBWE75BGB46L56M3XBJNO

not attested not anchored not stored refs pending

On neat atom structures for cylindric like algebras

Tarek Sayed Ahmed

arxiv:1305.5151 v1 · 2013-04-23 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{74W2IQBWE75BGB46L56M3XBJNO}

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	2026-05-18T03:25:13.519780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff2da4403627fa13079e5f7ccddc296bab4cf5c43c9314c9c3241d05ef104310

Aliases

arxiv: 1305.5151 · arxiv_version: 1305.5151v1 · doi: 10.48550/arxiv.1305.5151 · pith_short_12: 74W2IQBWE75B · pith_short_16: 74W2IQBWE75BGB46 · pith_short_8: 74W2IQBW

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/74W2IQBWE75BGB46L56M3XBJNO \
  | 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: ff2da4403627fa13079e5f7ccddc296bab4cf5c43c9314c9c3241d05ef104310

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64212159ca99b5f6edafc62af2be5d3f58b4b7d9399948775c97f9550113a63b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-04-23T12:17:12Z",
    "title_canon_sha256": "e68c7c38e9db1ba6876a7a9c75065b050cff4bd50a54585af9ebcd37ee8eb582"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5151",
    "kind": "arxiv",
    "version": 1
  }
}