Pith Number

pith:6NCOD7E4

pith:2002:6NCOD7E4ESJH54HTOCJNPLFM5Q

not attested not anchored not stored refs pending

Cosmological Deformation of Lorentzian Spin Foam Models

Karim Noui, Philippe Roche

arxiv:gr-qc/0211109 v1 · 2002-11-29 · 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{6NCOD7E4ESJH54HTOCJNPLFM5Q}

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.

Receipt and verification

First computed	2026-05-18T02:37:30.611720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f344e1fc9c24927ef0f37092d7acacec085d04cc228479ed63f2f8b3efdeeb4f

Aliases

arxiv: gr-qc/0211109 · arxiv_version: gr-qc/0211109v1 · doi: 10.48550/arxiv.gr-qc/0211109 · pith_short_12: 6NCOD7E4ESJH · pith_short_16: 6NCOD7E4ESJH54HT · pith_short_8: 6NCOD7E4

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/6NCOD7E4ESJH54HTOCJNPLFM5Q \
  | 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: f344e1fc9c24927ef0f37092d7acacec085d04cc228479ed63f2f8b3efdeeb4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90b009046acb49e4f189318f9f576d536402e79b65911c4c0b9545e2118ae6a6",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2002-11-29T17:25:07Z",
    "title_canon_sha256": "e53b2ebf81bcd20e22e4e7386346bf23b65bd9363f4870659f40144c9b58a87f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0211109",
    "kind": "arxiv",
    "version": 1
  }
}