Pith Number

pith:VWK6HKF6

pith:2015:VWK6HKF6LIP7AIX7P5ABAESDXP

not attested not anchored not stored refs pending

Different parametrizations of field equations in the $f(R)$ theories of gravity

Liberato Pizza

arxiv:1510.00593 v1 · 2015-09-30 · 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{VWK6HKF6LIP7AIX7P5ABAESDXP}

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	2026-05-18T01:31:12.551261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad95e3a8be5a1ff022ff7f40101243bbd3645f5432588e69dfda89e53e9946a5

Aliases

arxiv: 1510.00593 · arxiv_version: 1510.00593v1 · doi: 10.48550/arxiv.1510.00593 · pith_short_12: VWK6HKF6LIP7 · pith_short_16: VWK6HKF6LIP7AIX7 · pith_short_8: VWK6HKF6

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/VWK6HKF6LIP7AIX7P5ABAESDXP \
  | 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: ad95e3a8be5a1ff022ff7f40101243bbd3645f5432588e69dfda89e53e9946a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a204574db6c185b03d48fa8eb8ecb8163df6f0323fbdc11fb4077426316602f3",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-09-30T12:37:17Z",
    "title_canon_sha256": "2e4e4169ec38586f8313b5817df460cc30c59f56cc86facbd85bbb402672b950"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.00593",
    "kind": "arxiv",
    "version": 1
  }
}