Pith Number

pith:G3W7NXZT

pith:2008:G3W7NXZTBE2YF7QXIEKXFXLEUP

not attested not anchored not stored refs pending

Massive gravitational waves from f(R) theories of gravity: Potential detection with LISA

Christian Corda, Maria Felicia De Laurentis, Salvatore Capozziello

arxiv:0812.2272 v1 · 2008-12-11 · 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{G3W7NXZTBE2YF7QXIEKXFXLEUP}

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	2026-05-18T04:35:05.574869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36edf6df33093582fe17411572dd64a3f1f138670ca6fad0cfdb8e001c11c72d

Aliases

arxiv: 0812.2272 · arxiv_version: 0812.2272v1 · doi: 10.48550/arxiv.0812.2272 · pith_short_12: G3W7NXZTBE2Y · pith_short_16: G3W7NXZTBE2YF7QX · pith_short_8: G3W7NXZT

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/G3W7NXZTBE2YF7QXIEKXFXLEUP \
  | 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: 36edf6df33093582fe17411572dd64a3f1f138670ca6fad0cfdb8e001c11c72d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91796be5e9b633a3ace1fcb699001b0f6503cc1d590ef980ea36194042e3784e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-11T23:45:29Z",
    "title_canon_sha256": "f124a78fc7ce0290b519b3d00cf6ce9d920c3d1b82d06da5add93d7ef8580855"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2272",
    "kind": "arxiv",
    "version": 1
  }
}