Pith Number

pith:2HZ2L4HX

pith:1999:2HZ2L4HXWS45IWW26B3D3TIWCY

not attested not anchored not stored refs pending

Brans-Dicke-type theories and avoidance of the cosmological singularity

Israel Quiros, Rolando Bonal, Rolando Cardenas (Dpto.Fisica. Universidad Central de Las Villas. Santa Clara. Cuba.)

arxiv:gr-qc/9908075 v3 · 1999-08-30 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HZ2L4HXWS45IWW26B3D3TIWCY}

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	2026-07-04T16:13:54.148236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1f3a5f0f7b4b9d45adaf0763dcd16162f465dee706810de0932715277967173

Aliases

arxiv: gr-qc/9908075 · arxiv_version: gr-qc/9908075v3 · doi: 10.48550/arxiv.gr-qc/9908075 · pith_short_12: 2HZ2L4HXWS45 · pith_short_16: 2HZ2L4HXWS45IWW2 · pith_short_8: 2HZ2L4HX

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/2HZ2L4HXWS45IWW26B3D3TIWCY \
  | 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: d1f3a5f0f7b4b9d45adaf0763dcd16162f465dee706810de0932715277967173

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0dfb695df62d1ee7edcb6391908e617653146c7e6aa31b2998d304141ae31b0",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-08-30T22:24:06Z",
    "title_canon_sha256": "6935007f5a0c2cc068c09573cca84399fa37927336806b5ffa20c3ac1d6ed9db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9908075",
    "kind": "arxiv",
    "version": 3
  }
}