Pith Number

pith:7IQZQAAV

pith:2003:7IQZQAAVDACBX6BO2XGWTCPZYK

not attested not anchored not stored refs pending

Correspondence between the first and the second order formalism in the generalized gravity of f(R)-type

H. Iwasaki, N. Yamada, T. Yano, Y. Ezawa, Y. Ohkuwa

arxiv:gr-qc/0309010 v2 · 2003-09-02 · gr-qc · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7IQZQAAVDACBX6BO2XGWTCPZYK}

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	2026-07-04T14:25:42.207589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa2198001518041bf82ed5cd6989f9c29ad6418d4a6ef44cfb7b4e759bd1650c

Aliases

arxiv: gr-qc/0309010 · arxiv_version: gr-qc/0309010v2 · doi: 10.48550/arxiv.gr-qc/0309010 · pith_short_12: 7IQZQAAVDACB · pith_short_16: 7IQZQAAVDACBX6BO · pith_short_8: 7IQZQAAV

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/7IQZQAAVDACBX6BO2XGWTCPZYK \
  | 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: fa2198001518041bf82ed5cd6989f9c29ad6418d4a6ef44cfb7b4e759bd1650c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a58a37d2cea741d17497ba00fbce58d4d56145e0feb9b461d4d1c1d3bc882201",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2003-09-02T12:01:08Z",
    "title_canon_sha256": "13d4f33c9b5dc3e9e611cf96c225c66e81fbaffb60c93221a4896a21938b42d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0309010",
    "kind": "arxiv",
    "version": 2
  }
}