Pith Number

pith:T7UAHW2Y

pith:2017:T7UAHW2YSFPLOMEF3BCXY32ZQ7

not attested not anchored not stored refs pending

The realistic models of relativistic stars in f(R) = R + alpha R^2 gravity

(2) Cape Town U., (3) ICREA, Alvaro de la Cruz-Dombriz (2), Artyom V. Astashenok (1), Cosmology & Gravity group, Dept. Math. & Cape Town U., IEEC-CSIC), Sergei D. Odintsov (3) ((1) I. Kant Baltic Federal University

arxiv:1704.08311 v2 · 2017-04-26 · gr-qc · astro-ph.CO

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

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	2026-05-18T00:33:50.109938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fe803db58915eb73085d8457c6f5987eb41737cb1d028716f8b70cad07afa04

Aliases

arxiv: 1704.08311 · arxiv_version: 1704.08311v2 · doi: 10.48550/arxiv.1704.08311 · pith_short_12: T7UAHW2YSFPL · pith_short_16: T7UAHW2YSFPLOMEF · pith_short_8: T7UAHW2Y

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/T7UAHW2YSFPLOMEF3BCXY32ZQ7 \
  | 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: 9fe803db58915eb73085d8457c6f5987eb41737cb1d028716f8b70cad07afa04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0211b94c6861c01d28de446d099f55905ebe8ac2d2aa421a38f429098847ea6a",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-04-26T19:22:16Z",
    "title_canon_sha256": "e4038e5e20f4fdc6dcbb659dd4675737dca2165bf9efa1034302236bce97d607"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.08311",
    "kind": "arxiv",
    "version": 2
  }
}