Pith Number

pith:CMLTDT5R

pith:2008:CMLTDT5RQTZS4OANSE3QQ2RQMW

not attested not anchored not stored refs pending

Spin Foam Perturbation Theory for Three-Dimensional Quantum Gravity

Aleksandar Mikovic, Joao Faria Martins

arxiv:0804.2811 v2 · 2008-04-17 · gr-qc · hep-th · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CMLTDT5RQTZS4OANSE3QQ2RQMW}

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	2026-05-18T00:44:10.566501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

131731cfb184f32e380d9137086a3065a73438c4237434b0eec44fd3cb0322c1

Aliases

arxiv: 0804.2811 · arxiv_version: 0804.2811v2 · doi: 10.48550/arxiv.0804.2811 · pith_short_12: CMLTDT5RQTZS · pith_short_16: CMLTDT5RQTZS4OAN · pith_short_8: CMLTDT5R

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/CMLTDT5RQTZS4OANSE3QQ2RQMW \
  | 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: 131731cfb184f32e380d9137086a3065a73438c4237434b0eec44fd3cb0322c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bfe05bddb4f3eecf9c8cb93bd4c88fc3ff1e3c8fa812058eac324d1271d29ec",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-04-17T14:00:08Z",
    "title_canon_sha256": "2e7ebd6e20643463c201a6965f93ac4d4a0ab25f3eb79a319307c81a41134e48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.2811",
    "kind": "arxiv",
    "version": 2
  }
}