Pith Number

pith:NR72YN3I

pith:2018:NR72YN3IIHRFOV4CGFETTYJWKF

not attested not anchored not stored refs pending

Reconstruction of $f(R)$ lagrangian from a massive scalar field

Jackson Levi Said, Kazuharu Bamba, Soumya Chakrabarti

arxiv:1809.04955 v3 · 2018-09-12 · 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{NR72YN3IIHRFOV4CGFETTYJWKF}

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.

Cited by

1 paper in Pith

Exact Solutions and Accelerating Universe in Modified Brans-Dicke Theories

Receipt and verification

First computed	2026-07-05T00:38:31.497572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c7fac376841e2575782314939e136517d5d9ec3e6bbac223fe8c27031c35603

Aliases

arxiv: 1809.04955 · arxiv_version: 1809.04955v3 · doi: 10.48550/arxiv.1809.04955 · pith_short_12: NR72YN3IIHRF · pith_short_16: NR72YN3IIHRFOV4C · pith_short_8: NR72YN3I

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/NR72YN3IIHRFOV4CGFETTYJWKF \
  | 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: 6c7fac376841e2575782314939e136517d5d9ec3e6bbac223fe8c27031c35603

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "281e62d5615797ea306b94c61ed3ae0a6c00cf7c84967f5b89bbbb1f8b3976b1",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-09-12T09:46:18Z",
    "title_canon_sha256": "c2aad213c9ad1fd05650be25e8529058e4f7f311f2349e13d878ac13c252219c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04955",
    "kind": "arxiv",
    "version": 3
  }
}