Pith Number

pith:XI3IX3VB

pith:2021:XI3IX3VBGUHJ6F2V6R6OUHWFLH

not attested not anchored not stored refs pending

A high-performance code for EPRL spin foam amplitudes

Francesco Gozzini

arxiv:2107.13952 v1 · 2021-07-29 · 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{XI3IX3VBGUHJ6F2V6R6OUHWFLH}

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	2026-07-05T03:32:10.691492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba368beea1350e9f1755f47cea1ec559f350f79d22a3ba235aed6bd6c3cee532

Aliases

arxiv: 2107.13952 · arxiv_version: 2107.13952v1 · doi: 10.48550/arxiv.2107.13952 · pith_short_12: XI3IX3VBGUHJ · pith_short_16: XI3IX3VBGUHJ6F2V · pith_short_8: XI3IX3VB

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/XI3IX3VBGUHJ6F2V6R6OUHWFLH \
  | 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: ba368beea1350e9f1755f47cea1ec559f350f79d22a3ba235aed6bd6c3cee532

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8460410179a10b093ed64d8a403c0181d6e0bd70fd723bc0aa2210adf91a818",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-07-29T13:20:46Z",
    "title_canon_sha256": "fdde85723d5a2df37e2317a3a746b1c2bda41fc545185e3ef3183ba714980440"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.13952",
    "kind": "arxiv",
    "version": 1
  }
}