Pith Number

pith:LN2IR46P

pith:2006:LN2IR46PON6BVSZYS24O4KPWYS

not attested not anchored not stored refs pending

On the evolution of universes in quadratic theories of gravity

John D. Barrow, Sigbjorn Hervik

arxiv:gr-qc/0610013 v2 · 2006-10-03 · gr-qc · astro-ph · 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{LN2IR46PON6BVSZYS24O4KPWYS}

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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

2 papers in Pith

Effect of $R^2$ on the stability of de Sitter solution of the generalized Einsteinian cubic gravity

Modified Gravity and Cosmology

Receipt and verification

First computed	2026-07-04T15:17:02.454461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b7488f3cf737c1acb3896b8ee29f6c4bb11a5a1739e0d1c528ddd37b3ffe70f

Aliases

arxiv: gr-qc/0610013 · arxiv_version: gr-qc/0610013v2 · doi: 10.48550/arxiv.gr-qc/0610013 · pith_short_12: LN2IR46PON6B · pith_short_16: LN2IR46PON6BVSZY · pith_short_8: LN2IR46P

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/LN2IR46PON6BVSZYS24O4KPWYS \
  | 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: 5b7488f3cf737c1acb3896b8ee29f6c4bb11a5a1739e0d1c528ddd37b3ffe70f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2dc17a91a6bd00e91d7d8c336ba296d0508c1be7fe5c809025ecf625e7141618",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2006-10-03T18:47:49Z",
    "title_canon_sha256": "2300425bb044183bbb876e727ae069d62260855404b554de6bab48ed260b5afd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0610013",
    "kind": "arxiv",
    "version": 2
  }
}