Pith Number

pith:S6JJC44I

pith:2011:S6JJC44IU3R5254OCEAHJ2HYG2

not attested not anchored not stored refs pending

On the stability of the cosmological solutions in f(R,G) gravity

\'Alvaro de la Cruz-Dombriz (ACGC, Diego S\'aez-G\'omez (University of the Basque Country), University Cape Town)

arxiv:1112.4481 v2 · 2011-12-19 · gr-qc · astro-ph.CO · 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{S6JJC44IU3R5254OCEAHJ2HYG2}

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	2026-05-18T01:59:05.261723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9792917388a6e3dd778e110074e8f8368c85d9c4f2d93d9e6a5ca9c9fc9b2211

Aliases

arxiv: 1112.4481 · arxiv_version: 1112.4481v2 · doi: 10.48550/arxiv.1112.4481 · pith_short_12: S6JJC44IU3R5 · pith_short_16: S6JJC44IU3R5254O · pith_short_8: S6JJC44I

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/S6JJC44IU3R5254OCEAHJ2HYG2 \
  | 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: 9792917388a6e3dd778e110074e8f8368c85d9c4f2d93d9e6a5ca9c9fc9b2211

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5200b9a1eefda36115efa2214b9c11c64d10df46815c5e9bc29187d9c7e2c6fb",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-12-19T21:00:05Z",
    "title_canon_sha256": "bf384c7a9b8f0e8b04c6fe599bf8a0de5676072ef84c04748076dc7548f0e9ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4481",
    "kind": "arxiv",
    "version": 2
  }
}