Pith Number

pith:PW74KXWF

pith:2013:PW74KXWFFMMHOEI4JSBMZBV4CH

not attested not anchored not stored refs pending

Note on the equation of state of geometric dark-energy in f(R) gravity

Leonardo Pati\~no, Luisa G. Jaime, Marcelo Salgado

arxiv:1312.5428 v1 · 2013-12-19 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PW74KXWFFMMHOEI4JSBMZBV4CH}

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	2026-05-18T01:45:44.201707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dbfc55ec52b1877111c4c82cc86bc11fc276f7b37a388c98d04b5d5656430e2

Aliases

arxiv: 1312.5428 · arxiv_version: 1312.5428v1 · doi: 10.48550/arxiv.1312.5428 · pith_short_12: PW74KXWFFMMH · pith_short_16: PW74KXWFFMMHOEI4 · pith_short_8: PW74KXWF

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/PW74KXWFFMMHOEI4JSBMZBV4CH \
  | 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: 7dbfc55ec52b1877111c4c82cc86bc11fc276f7b37a388c98d04b5d5656430e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09b21401934e1929a74a7cbe7c3eccf6fd7fb1033207a1995c6c2b2f5fa4909b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-12-19T07:38:27Z",
    "title_canon_sha256": "b2520b979af165a71d02623088fc16718714d8d96f863289dd6e2e1d51927ff4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5428",
    "kind": "arxiv",
    "version": 1
  }
}