Pith Number

pith:VKADXGAN

pith:2018:VKADXGANYBSLHPWG7IAMSQM6CI

not attested not anchored not stored refs pending

Perturbative solutions of the $f(R)$-theory of gravity in a central gravitational field and some applications

Nguyen Anh Ky, Nguyen Thi Hong Van, Pham Van Ky

arxiv:1807.04628 v1 · 2018-07-08 · gr-qc · astro-ph.GA · 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{VKADXGANYBSLHPWG7IAMSQM6CI}

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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

1 paper in Pith

Nonstatic Reissner-Nordstr\"om metric in the perturbative $f(R)$ theory: Embedding in the background of the FLRW cosmology, uniqueness of solutions, the TOV equation

Receipt and verification

First computed	2026-07-05T00:15:33.883228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa803b980dc064b3bec6fa00c9419e1237aa0544b25948ad5081fd23e71435ff

Aliases

arxiv: 1807.04628 · arxiv_version: 1807.04628v1 · doi: 10.48550/arxiv.1807.04628 · pith_short_12: VKADXGANYBSL · pith_short_16: VKADXGANYBSLHPWG · pith_short_8: VKADXGAN

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/VKADXGANYBSLHPWG7IAMSQM6CI \
  | 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: aa803b980dc064b3bec6fa00c9419e1237aa0544b25948ad5081fd23e71435ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "684236e735ef7af423f7cc850713b073676613140a7fe2b661414c8f08d877a6",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-07-08T16:15:34Z",
    "title_canon_sha256": "1589009cc5af5048c1473ee0a81c52535cd0cab43c909a9419b2ef8962bcbd61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04628",
    "kind": "arxiv",
    "version": 1
  }
}