Pith Number

pith:55D4QERK

pith:2020:55D4QERKEWUGRHOZM4QERPUBU5

not attested not anchored not stored refs pending

Numerical analysis of spin foam dynamics and the flatness problem

Francesco Gozzini, Giorgio Sarno, Pietro Dona

arxiv:2004.12911 v3 · 2020-04-27 · 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{55D4QERKEWUGRHOZM4QERPUBU5}

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	2026-07-05T02:29:53.475295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef47c8122a25a8689dd9672048be81a75b8c0763c5657fafda87605bb1ac78d2

Aliases

arxiv: 2004.12911 · arxiv_version: 2004.12911v3 · doi: 10.48550/arxiv.2004.12911 · pith_short_12: 55D4QERKEWUG · pith_short_16: 55D4QERKEWUGRHOZ · pith_short_8: 55D4QERK

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/55D4QERKEWUGRHOZM4QERPUBU5 \
  | 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: ef47c8122a25a8689dd9672048be81a75b8c0763c5657fafda87605bb1ac78d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45c53db2e0969d291d5501f768205adf77a5d30ffe2ce417e0dcf47e928df3f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-04-27T16:23:48Z",
    "title_canon_sha256": "a063a97c0caac1f0f50d20dec196e92d61b5ec2562ea7a4e1055f995fffe31f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.12911",
    "kind": "arxiv",
    "version": 3
  }
}