Pith Number

pith:URDUDFHL

pith:2002:URDUDFHLCEF2UPTHFCT62EOOXZ

not attested not anchored not stored refs pending

Insertion and Elimination: the doubly infinite Lie algebra of Feynman graphs

Alain Connes, Dirk Kreimer

arxiv:hep-th/0201157 v2 · 2002-01-20 · hep-th · 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{URDUDFHLCEF2UPTHFCT62EOOXZ}

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	2026-05-18T01:38:50.003526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4474194eb110baa3e6728a7ed11cebe70d5c7476ac5d3c2e752d046e9e10866

Aliases

arxiv: hep-th/0201157 · arxiv_version: hep-th/0201157v2 · doi: 10.48550/arxiv.hep-th/0201157 · pith_short_12: URDUDFHLCEF2 · pith_short_16: URDUDFHLCEF2UPTH · pith_short_8: URDUDFHL

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/URDUDFHLCEF2UPTHFCT62EOOXZ \
  | 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: a4474194eb110baa3e6728a7ed11cebe70d5c7476ac5d3c2e752d046e9e10866

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8507e27a9e9ae9b8d304695d09db660af46a586f88e4e52cb542167fdaec724",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2002-01-20T22:10:38Z",
    "title_canon_sha256": "77c27d458aff78a368bd36ab53d6b264789dd054988265cbbb26a887d4bbf5a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0201157",
    "kind": "arxiv",
    "version": 2
  }
}