Pith Number

pith:DQPNG3L7

pith:2011:DQPNG3L7AT2PKFYALFSCPT4HL4

not attested not anchored not stored refs pending

Newtonian gravity on quantum spacetime

Shahn Majid

arxiv:1109.6190 v2 · 2011-09-28 · math-ph · gr-qc · hep-th · math.MP · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQPNG3L7AT2PKFYALFSCPT4HL4}

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	2026-05-18T03:49:45.786024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c1ed36d7f04f4f51700596427cf875f1c69aa10edf49f60832aafee6e58aaf2

Aliases

arxiv: 1109.6190 · arxiv_version: 1109.6190v2 · doi: 10.48550/arxiv.1109.6190 · pith_short_12: DQPNG3L7AT2P · pith_short_16: DQPNG3L7AT2PKFYA · pith_short_8: DQPNG3L7

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/DQPNG3L7AT2PKFYALFSCPT4HL4 \
  | 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: 1c1ed36d7f04f4f51700596427cf875f1c69aa10edf49f60832aafee6e58aaf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bc598d56a4c70287a5eb6e73547777a12b98e82f9fe7837386a383c8b68bc84",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th",
      "math.MP",
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2011-09-28T12:56:32Z",
    "title_canon_sha256": "3afa5b780f305b88b1d3af68a6c567b85e08caf2e76f19cb47081a7c6488ba81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.6190",
    "kind": "arxiv",
    "version": 2
  }
}