Pith Number

pith:NRYGJJTN

pith:2011:NRYGJJTNAOQJX4STIR6GIB2MD4

not attested not anchored not stored refs pending

Noncommutative cosmological models coupled to a perfect fluid and a cosmological constant

A. C. R. Mendes, E. M. C. Abreu, G. Oliveira-Neto, M. V. Marcial, W. Oliveira

arxiv:1111.5376 v1 · 2011-11-23 · hep-th · gr-qc · 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{NRYGJJTNAOQJX4STIR6GIB2MD4}

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	2026-05-18T01:59:26.549591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c7064a66d03a09bf253447c64074c1f0082bb71a44c7b71bd2fbd329f8d3b9a

Aliases

arxiv: 1111.5376 · arxiv_version: 1111.5376v1 · doi: 10.48550/arxiv.1111.5376 · pith_short_12: NRYGJJTNAOQJ · pith_short_16: NRYGJJTNAOQJX4ST · pith_short_8: NRYGJJTN

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/NRYGJJTNAOQJX4STIR6GIB2MD4 \
  | 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: 6c7064a66d03a09bf253447c64074c1f0082bb71a44c7b71bd2fbd329f8d3b9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6846911e38adf29edc74d343e9698698a6d148e53e5846247625d039e7b1133e",
    "cross_cats_sorted": [
      "gr-qc",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2011-11-23T00:34:56Z",
    "title_canon_sha256": "d83ef71279d65675daec76064d874b6c38c50a70b7cf27e7f08542de66c5f13f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5376",
    "kind": "arxiv",
    "version": 1
  }
}