Pith Number

pith:ZGNHLY2Z

pith:2018:ZGNHLY2ZU3CLCKRS6RASLH62EY

not attested not anchored not stored refs pending

Spin-foam model for gravity coupled to massless scalar field

Jerzy lewandowski, Marcin Kisielowski

arxiv:1807.06098 v1 · 2018-07-16 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZGNHLY2ZU3CLCKRS6RASLH62EY}

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	2026-05-17T23:45:37.544420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c99a75e359a6c4b12a32f441259fda2610075b9e1af998f853b0f48d05095285

Aliases

arxiv: 1807.06098 · arxiv_version: 1807.06098v1 · doi: 10.48550/arxiv.1807.06098 · pith_short_12: ZGNHLY2ZU3CL · pith_short_16: ZGNHLY2ZU3CLCKRS · pith_short_8: ZGNHLY2Z

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/ZGNHLY2ZU3CLCKRS6RASLH62EY \
  | 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: c99a75e359a6c4b12a32f441259fda2610075b9e1af998f853b0f48d05095285

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eddb10614bbf4d1b93618b354d2b502b156fc844d49364df596316031961feaa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-07-16T20:41:24Z",
    "title_canon_sha256": "51c0e0b7c2518f2fcd83159fe8acefd85eb7b9c4e50c58d9b83b0e1a88134aad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06098",
    "kind": "arxiv",
    "version": 1
  }
}