Pith Number

pith:5H3W7UMY

pith:2019:5H3W7UMYGW6NHMUIJOOBN5RWZB

not attested not anchored not stored refs pending

Numerical study of the Lorentzian Engle-Pereira-Rovelli-Livine spin foam amplitude

Giorgio Sarno, Marco Fanizza, Pietro Dona, Simone Speziale

arxiv:1903.12624 v3 · 2019-03-29 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5H3W7UMYGW6NHMUIJOOBN5RWZB}

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

Toller matrices and the Feynman $i\varepsilon$ in spinfoams

Receipt and verification

First computed	2026-07-05T01:20:10.486270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9f76fd19835bcd3b2884b9c16f636c84ad66d2303fc7c0e04c0a007789b3db6

Aliases

arxiv: 1903.12624 · arxiv_version: 1903.12624v3 · doi: 10.48550/arxiv.1903.12624 · pith_short_12: 5H3W7UMYGW6N · pith_short_16: 5H3W7UMYGW6NHMUI · pith_short_8: 5H3W7UMY

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/5H3W7UMYGW6NHMUIJOOBN5RWZB \
  | 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: e9f76fd19835bcd3b2884b9c16f636c84ad66d2303fc7c0e04c0a007789b3db6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c9e2fd2ce0a5846d91ae3134cc161d39e2dc6381ee12d2def38e899a35ee621",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-03-29T17:21:44Z",
    "title_canon_sha256": "af4ff787e734051f36474094e294988e091bea900e6c6b788eb98f5998f6c107"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.12624",
    "kind": "arxiv",
    "version": 3
  }
}