Pith Number

pith:H4EOGKMP

pith:2017:H4EOGKMPPDVKUSOI7IQIN3YSMQ

not attested not anchored not stored refs pending

Perfect fluid solutions of Brans-Dicke and f(R)cosmology

Dilek K. Ciftci, Valerio Faraoni

arxiv:1711.04026 v2 · 2017-11-10 · gr-qc · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4EOGKMPPDVKUSOI7IQIN3YSMQ}

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	2026-05-18T00:19:25.358137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f08e3298f78eaaa49c8fa2086ef12641552d7e54f1f147ded207be333a5c676

Aliases

arxiv: 1711.04026 · arxiv_version: 1711.04026v2 · doi: 10.48550/arxiv.1711.04026 · pith_short_12: H4EOGKMPPDVK · pith_short_16: H4EOGKMPPDVKUSOI · pith_short_8: H4EOGKMP

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/H4EOGKMPPDVKUSOI7IQIN3YSMQ \
  | 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: 3f08e3298f78eaaa49c8fa2086ef12641552d7e54f1f147ded207be333a5c676

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8153fc4fdee1e1ff73d21ce3ca3699a6fef7ce6fda822e30b9f8b4f070865025",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-11-10T21:55:17Z",
    "title_canon_sha256": "2dd1d7a2217c2b75562347c1306b9af988f2439fb62dcb3308699c65eb217c8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.04026",
    "kind": "arxiv",
    "version": 2
  }
}