Pith Number

pith:I5IQXSAJ

pith:1998:I5IQXSAJPJ4DMFZ7725X3DCSPN

not attested not anchored not stored refs pending

Categorification

James Dolan, John C. Baez

arxiv:math/9802029 v1 · 1998-02-05 · math.QA · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I5IQXSAJPJ4DMFZ7725X3DCSPN}

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	2026-05-18T02:35:38.437698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47510bc8097a7836173ffebb7d8c527b42912bc2a5f04517e706ef87bc6043f2

Aliases

arxiv: math/9802029 · arxiv_version: math/9802029v1 · doi: 10.48550/arxiv.math/9802029 · pith_short_12: I5IQXSAJPJ4D · pith_short_16: I5IQXSAJPJ4DMFZ7 · pith_short_8: I5IQXSAJ

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/I5IQXSAJPJ4DMFZ7725X3DCSPN \
  | 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: 47510bc8097a7836173ffebb7d8c527b42912bc2a5f04517e706ef87bc6043f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44f813b0102a09512cc8fe1062f36a398b8d11bcdcdcf1785442febb97127968",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "",
    "primary_cat": "math.QA",
    "submitted_at": "1998-02-05T19:25:50Z",
    "title_canon_sha256": "1902bbdb1e730d48389b9d186a92afc693398c97f2bab4b8bb384240a55a01bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9802029",
    "kind": "arxiv",
    "version": 1
  }
}