Pith Number

pith:YYWL3DC7

pith:2011:YYWL3DC7F4CE5HN6JE6RTNAXK4

not attested not anchored not stored refs pending

Cosmic acceleration from modified gravity with Palatini formalism

A. Borowiec, A. Kurek, M. Kamionka, M. Szydlowski

arxiv:1109.3420 v2 · 2011-09-15 · gr-qc · astro-ph.CO · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YYWL3DC7F4CE5HN6JE6RTNAXK4}

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	2026-05-18T04:00:26.593884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c62cbd8c5f2f044e9dbe493d19b417570b79cdbcae5f680a57006d3d4edb6806

Aliases

arxiv: 1109.3420 · arxiv_version: 1109.3420v2 · doi: 10.48550/arxiv.1109.3420 · pith_short_12: YYWL3DC7F4CE · pith_short_16: YYWL3DC7F4CE5HN6 · pith_short_8: YYWL3DC7

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/YYWL3DC7F4CE5HN6JE6RTNAXK4 \
  | 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: c62cbd8c5f2f044e9dbe493d19b417570b79cdbcae5f680a57006d3d4edb6806

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1251eb1f4370e245711f7172dcf39d80ee1c60799d8230acd639fa9a65151052",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-09-15T18:46:09Z",
    "title_canon_sha256": "366d39a78d1490577ce14756c00a6e7744ef73fb50265dae3cb62c6f054ff914"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3420",
    "kind": "arxiv",
    "version": 2
  }
}