Pith Number

pith:OPEOHDC5

pith:2017:OPEOHDC5VNDOPSGXG3262QR77K

not attested not anchored not stored refs pending

On two chain models for the gravity operad

Cl\'ement Dupont, Geoffroy Horel

arxiv:1702.02479 v2 · 2017-02-08 · math.AT · math.AG · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPEOHDC5VNDOPSGXG3262QR77K}

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	2026-05-18T00:13:53.608452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73c8e38c5dab46e7c8d736f5ed423ffab40cf468f20354d0e28c2c0fc40ff297

Aliases

arxiv: 1702.02479 · arxiv_version: 1702.02479v2 · doi: 10.48550/arxiv.1702.02479 · pith_short_12: OPEOHDC5VNDO · pith_short_16: OPEOHDC5VNDOPSGX · pith_short_8: OPEOHDC5

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/OPEOHDC5VNDOPSGXG3262QR77K \
  | 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: 73c8e38c5dab46e7c8d736f5ed423ffab40cf468f20354d0e28c2c0fc40ff297

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f840766bbc97e2e8fe3b2a79d73f510bb07e972896b2f94558e0dbcd22241c75",
    "cross_cats_sorted": [
      "math.AG",
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-02-08T15:45:08Z",
    "title_canon_sha256": "4452b32914227199be72f889e2efcbd872281e0dd5ec4ebdf820011351d7d487"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.02479",
    "kind": "arxiv",
    "version": 2
  }
}