Pith Number

pith:ARSNNGJR

pith:2010:ARSNNGJRTQIYRBSOPJVJEU2N2M

not attested not anchored not stored refs pending

Cosmological perturbation in f(R,G) theories with a perfect fluid

Antonio De Felice, Jean-Marc Gerard, Teruaki Suyama

arxiv:1005.1958 v1 · 2010-05-11 · astro-ph.CO · gr-qc · hep-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{ARSNNGJRTQIYRBSOPJVJEU2N2M}

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	2026-05-18T02:33:26.565842Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0464d699319c1188864e7a6a92534dd30b67561de091db19604043ce7137dc4c

Aliases

arxiv: 1005.1958 · arxiv_version: 1005.1958v1 · doi: 10.48550/arxiv.1005.1958 · pith_short_12: ARSNNGJRTQIY · pith_short_16: ARSNNGJRTQIYRBSO · pith_short_8: ARSNNGJR

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/ARSNNGJRTQIYRBSOPJVJEU2N2M \
  | 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: 0464d699319c1188864e7a6a92534dd30b67561de091db19604043ce7137dc4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d0cbc638498fb77a33feac4b615d389a9af77431e737eb69b96f043bbff9760",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-05-11T21:31:44Z",
    "title_canon_sha256": "22cff0d3b2bacfed9315f205a25379214ce7d35ddf03b304162f6fdea75062f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.1958",
    "kind": "arxiv",
    "version": 1
  }
}