Pith Number

pith:Z3P6MASH

pith:2013:Z3P6MASHOOHQPEYIFIORTFFCII

not attested not anchored not stored refs pending

Observations about Leonardo's drawings for Luca Pacioli

Dirk Huylebrouck

arxiv:1311.2855 v1 · 2013-11-12 · math.HO · physics.pop-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z3P6MASHOOHQPEYIFIORTFFCII}

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	2026-05-18T03:07:21.743947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cedfe60247738f0793082a1d1994a2422494f6f4f9cf055a8a574a0eeb07dfe8

Aliases

arxiv: 1311.2855 · arxiv_version: 1311.2855v1 · doi: 10.48550/arxiv.1311.2855 · pith_short_12: Z3P6MASHOOHQ · pith_short_16: Z3P6MASHOOHQPEYI · pith_short_8: Z3P6MASH

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/Z3P6MASHOOHQPEYIFIORTFFCII \
  | 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: cedfe60247738f0793082a1d1994a2422494f6f4f9cf055a8a574a0eeb07dfe8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd3884059077538703d194a5f1641234a2a42ef7fbf6764d55363cf47422dc8b",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2013-11-12T17:48:25Z",
    "title_canon_sha256": "3e8ae1f26825cc283a8030795b864ce595d081d2716549d8424e10e98d4a6e26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2855",
    "kind": "arxiv",
    "version": 1
  }
}