Pith Number

pith:NHKZ4KW5

pith:2005:NHKZ4KW5LATUDSIC56EUSBPJFA

not attested not anchored not stored refs pending

Noncommutative scalar field minimally coupled to gravity

Orfeu Bertolami

arxiv:gr-qc/0501058 v1 · 2005-01-19 · 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{NHKZ4KW5LATUDSIC56EUSBPJFA}

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	2026-07-04T16:55:09.601602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69d59e2add582741c902ef894905e92815150548d0a9a4d26a46a80a0d93ea6f

Aliases

arxiv: gr-qc/0501058 · arxiv_version: gr-qc/0501058v1 · doi: 10.48550/arxiv.gr-qc/0501058 · pith_short_12: NHKZ4KW5LATU · pith_short_16: NHKZ4KW5LATUDSIC · pith_short_8: NHKZ4KW5

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/NHKZ4KW5LATUDSIC56EUSBPJFA \
  | 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: 69d59e2add582741c902ef894905e92815150548d0a9a4d26a46a80a0d93ea6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "431f0658d42f778c1358761c5b0ea498ed0ead7785686077c8e0bcefe3f38f65",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2005-01-19T13:55:21Z",
    "title_canon_sha256": "851dd61d1620dfb89522d4e7718ba25b913aa0e8b6b5787d67601033f9cf1bed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0501058",
    "kind": "arxiv",
    "version": 1
  }
}