Pith Number

pith:EYPJ4QLJ

pith:2011:EYPJ4QLJMUFUEWKVNUNO3VRGPN

not attested not anchored not stored refs pending

Cosmological constant in spinfoam cosmology

Carlo Rovelli, Eugenio Bianchi, Francesca Vidotto, Thomas Krajewski

arxiv:1101.4049 v1 · 2011-01-20 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EYPJ4QLJMUFUEWKVNUNO3VRGPN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:22:11.067385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

261e9e4169650b4259556d1aedd6267b5e5e2d99538e4eca2c618418a7e0101b

Aliases

arxiv: 1101.4049 · arxiv_version: 1101.4049v1 · doi: 10.48550/arxiv.1101.4049 · pith_short_12: EYPJ4QLJMUFU · pith_short_16: EYPJ4QLJMUFUEWKV · pith_short_8: EYPJ4QLJ

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/EYPJ4QLJMUFUEWKVNUNO3VRGPN \
  | 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: 261e9e4169650b4259556d1aedd6267b5e5e2d99538e4eca2c618418a7e0101b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1844a674befa8118f8960b2d8bc72018610a76b2b908d07daf0cf219f174cd02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-01-20T23:27:19Z",
    "title_canon_sha256": "203fa39b8d46688fd1e6ac2e4d99800702a9842fe57e40d77e548ebb53866641"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.4049",
    "kind": "arxiv",
    "version": 1
  }
}