Pith Number

pith:CFDIWVG6

pith:1998:CFDIWVG6HM7JLSBH3KFQOVEAOM

not attested not anchored not stored refs pending

Exterior Differential System for Cosmological G2 Perfect Fluids and Geodesic Completeness

L. Fernandez-Jambrina, L. M. Gonzalez-Romero

arxiv:gr-qc/9812039 v1 · 1998-12-11 · 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{CFDIWVG6HM7JLSBH3KFQOVEAOM}

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	2026-07-04T16:08:53.859449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11468b54de3b3e95c827da8b075480731f5f6966d798fcffa8895a24aacb189f

Aliases

arxiv: gr-qc/9812039 · arxiv_version: gr-qc/9812039v1 · doi: 10.48550/arxiv.gr-qc/9812039 · pith_short_12: CFDIWVG6HM7J · pith_short_16: CFDIWVG6HM7JLSBH · pith_short_8: CFDIWVG6

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/CFDIWVG6HM7JLSBH3KFQOVEAOM \
  | 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: 11468b54de3b3e95c827da8b075480731f5f6966d798fcffa8895a24aacb189f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9df7d0e320bb8753162df9c3ff24e3dee869564d762c19e14787de216b9121c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1998-12-11T16:45:12Z",
    "title_canon_sha256": "b38b4ee746ce474726668a2c82636fe9c9a2fa827bfb7c8471bc0915dfe4a6dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9812039",
    "kind": "arxiv",
    "version": 1
  }
}