Pith Number

pith:UF3SQDDG

pith:2003:UF3SQDDG6UNZXJC6PEK4KWMWHF

not attested not anchored not stored refs pending

Spin Foam Models for Quantum Gravity

Alejandro Perez

arxiv:gr-qc/0301113 v2 · 2003-01-27 · 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{UF3SQDDG6UNZXJC6PEK4KWMWHF}

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

2 papers in Pith

The problem of time: a path integral view

Collective excitations in quantum gravity condensates

Receipt and verification

First computed	2026-05-18T00:37:31.948072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a177280c66f51b9ba45e7915c559963940a7a4428306c72def9e98b0f367927c

Aliases

arxiv: gr-qc/0301113 · arxiv_version: gr-qc/0301113v2 · doi: 10.48550/arxiv.gr-qc/0301113 · pith_short_12: UF3SQDDG6UNZ · pith_short_16: UF3SQDDG6UNZXJC6 · pith_short_8: UF3SQDDG

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/UF3SQDDG6UNZXJC6PEK4KWMWHF \
  | 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: a177280c66f51b9ba45e7915c559963940a7a4428306c72def9e98b0f367927c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e773e117b9b77dc2ab95cc5c6c6d653678c5d5a90897a5cb44b3651846628c7",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2003-01-27T22:59:37Z",
    "title_canon_sha256": "b52e3cc8094585c1a6f092902a3e68413d65539fc46eb79faf9d17c5cfb7406f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0301113",
    "kind": "arxiv",
    "version": 2
  }
}