Pith Number

pith:6WRMCCH7

pith:2006:6WRMCCH7ZGJZSXQB3OTYZ32RU3

not attested not anchored not stored refs pending

Power-laws f(R) theories are cosmologically unacceptable

David Polarski (LPMT, France), Italy), Japan), Luca Amendola (INAF, Shinji Tsujikawa (Gunma College

arxiv:astro-ph/0605384 v2 · 2006-05-16 · astro-ph · 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{6WRMCCH7ZGJZSXQB3OTYZ32RU3}

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

Understanding curvature-matter interaction in viable $f(R)$ dark energy models: A dynamical analysis approach

Receipt and verification

First computed	2026-07-04T15:31:22.719244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5a2c108ffc993995e01dba78cef51a6f073dcadcc4289c5f1ee7bf6317d0eee

Aliases

arxiv: astro-ph/0605384 · arxiv_version: astro-ph/0605384v2 · doi: 10.48550/arxiv.astro-ph/0605384 · pith_short_12: 6WRMCCH7ZGJZ · pith_short_16: 6WRMCCH7ZGJZSXQB · pith_short_8: 6WRMCCH7

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/6WRMCCH7ZGJZSXQB3OTYZ32RU3 \
  | 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: f5a2c108ffc993995e01dba78cef51a6f073dcadcc4289c5f1ee7bf6317d0eee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d06a674c3075effd5e1e9c5bc9e939ea8908428f4ed0acd5a381a30283eb91bb",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-05-16T10:39:05Z",
    "title_canon_sha256": "107ff7dc3fa5dfcced40d8c9714ffeddb68a43c36e51918fe5f357040fb13468"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0605384",
    "kind": "arxiv",
    "version": 2
  }
}