Pith Number

pith:G5DAULCF

pith:2009:G5DAULCFHFWVYR6DXUTK5EELG7

not attested not anchored not stored refs pending

Black Holes in f(R) theories

A. de la Cruz-Dombriz, A. Dobado, A. L. Maroto

arxiv:0907.3872 v2 · 2009-07-22 · 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{G5DAULCFHFWVYR6DXUTK5EELG7}

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.

Cited by

1 paper in Pith

An innovative black hole solution and thermodynamic properties in higher-order curvature gravity with a scalar field

Receipt and verification

First computed	2026-07-04T17:19:31.895170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37460a2c45396d5c47c3bd26ae908b37c1a6b9235b3a61a5ffb99e0a63ab8a1d

Aliases

arxiv: 0907.3872 · arxiv_version: 0907.3872v2 · doi: 10.48550/arxiv.0907.3872 · pith_short_12: G5DAULCFHFWV · pith_short_16: G5DAULCFHFWVYR6D · pith_short_8: G5DAULCF

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/G5DAULCFHFWVYR6DXUTK5EELG7 \
  | 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: 37460a2c45396d5c47c3bd26ae908b37c1a6b9235b3a61a5ffb99e0a63ab8a1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac3ced032f2e39f638a381c161ecdc67f94fa46e1e71eb06ecf507c3ee0cf6b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-07-22T16:05:13Z",
    "title_canon_sha256": "a2ae27cfa899418991d93b995934592518d8212dd1c64e8b7df51fdd54761638"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3872",
    "kind": "arxiv",
    "version": 2
  }
}