Pith Number

pith:7SKE3JRQ

pith:2012:7SKE3JRQQPS3NQOPSMD6TYWZOF

not attested not anchored not stored refs pending

General relativity as the equation of state of spin foam

Lee Smolin

arxiv:1205.5529 v1 · 2012-05-24 · 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{7SKE3JRQQPS3NQOPSMD6TYWZOF}

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

Jacobson's thermodynamic approach to classical gravity applied to non-Riemannian geometries: remarks on the simplicity of Nature

Receipt and verification

First computed	2026-05-18T03:55:00.876606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc944da63083e5b6c1cf9307e9e2d9715fc3e7d70c16365183483df379fb5952

Aliases

arxiv: 1205.5529 · arxiv_version: 1205.5529v1 · doi: 10.48550/arxiv.1205.5529 · pith_short_12: 7SKE3JRQQPS3 · pith_short_16: 7SKE3JRQQPS3NQOP · pith_short_8: 7SKE3JRQ

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/7SKE3JRQQPS3NQOPSMD6TYWZOF \
  | 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: fc944da63083e5b6c1cf9307e9e2d9715fc3e7d70c16365183483df379fb5952

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0010d0eb4301adfd4386034fabee6f5bef8cfb462633c43fc0740f812e3b8ec8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-05-24T19:08:20Z",
    "title_canon_sha256": "1d8e41019298fbc08086132d17f4d474a21b155889015fd389aacedf16abb511"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5529",
    "kind": "arxiv",
    "version": 1
  }
}