Pith Number

pith:67ILI7LJ

pith:1998:67ILI7LJ26WACZMLET4MIKDQOE

not attested not anchored not stored refs pending

Basic Bicategories

Tom Leinster

arxiv:math/9810017 v1 · 1998-10-04 · 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{67ILI7LJ26WACZMLET4MIKDQOE}

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.

Cited by

1 paper in Pith

A Model of Type Theory in Groupoid Assemblies

Receipt and verification

First computed	2026-07-04T14:40:48.936825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7d0b47d69d7ac01658b24f8c42870710771a95ee6d573fc92879c511f40b46b

Aliases

arxiv: math/9810017 · arxiv_version: math/9810017v1 · doi: 10.48550/arxiv.math/9810017 · pith_short_12: 67ILI7LJ26WA · pith_short_16: 67ILI7LJ26WACZML · pith_short_8: 67ILI7LJ

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/67ILI7LJ26WACZMLET4MIKDQOE \
  | 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: f7d0b47d69d7ac01658b24f8c42870710771a95ee6d573fc92879c511f40b46b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "234d3d057634ddc742bfc23edecd6f8fd4e7b36008c03de4f42c03299100bcd8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.CT",
    "submitted_at": "1998-10-04T13:53:00Z",
    "title_canon_sha256": "d04310f51aeca8c199e2739a9f1c9e6174dc87194c83cdc3e713c5835424dee0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9810017",
    "kind": "arxiv",
    "version": 1
  }
}