Pith Number

pith:DU3KCXQ5

pith:1997:DU3KCXQ5FGOWRCADEGY66QIS4Z

not attested not anchored not stored refs pending

Varying G and Other Constants

John D. Barrow

arxiv:gr-qc/9711084 v1 · 1997-11-27 · gr-qc · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DU3KCXQ5FGOWRCADEGY66QIS4Z}

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.

Cited by

1 paper in Pith

Spherically symmetric black holes in Gravity from Entropy and spontaneous emission

Receipt and verification

First computed	2026-07-04T15:50:44.052419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d36a15e1d299d68880321b1ef4112e67bae942ec50be7436684545258839f0f

Aliases

arxiv: gr-qc/9711084 · arxiv_version: gr-qc/9711084v1 · doi: 10.48550/arxiv.gr-qc/9711084 · pith_short_12: DU3KCXQ5FGOW · pith_short_16: DU3KCXQ5FGOWRCAD · pith_short_8: DU3KCXQ5

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/DU3KCXQ5FGOWRCADEGY66QIS4Z \
  | 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: 1d36a15e1d299d68880321b1ef4112e67bae942ec50be7436684545258839f0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41a5b9047a3ba20c379f791dc7aa0480f53d17bb19a87f20a274cf8a9c754591",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-11-27T15:40:21Z",
    "title_canon_sha256": "c397a76c3cb1567093e138b88e1d0017d7634cceb9924197c94f29e6d6d1285c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9711084",
    "kind": "arxiv",
    "version": 1
  }
}