Pith Number

pith:MQQLQIQJ

pith:2013:MQQLQIQJ5FDXVTPC7KLURMM2RD

not attested not anchored not stored refs pending

Black holes in extended gravity theories in Palatini formalism

D. Rubiera-Garcia, Gonzalo J. Olmo, Jesus Martinez-Asencio

arxiv:1301.2921 v1 · 2013-01-14 · 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{MQQLQIQJ5FDXVTPC7KLURMM2RD}

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	2026-05-18T03:36:27.772746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6420b82209e9477acde2fa9748b19a88df8bf48f10c78f6c3b9a37acfea16a29

Aliases

arxiv: 1301.2921 · arxiv_version: 1301.2921v1 · doi: 10.48550/arxiv.1301.2921 · pith_short_12: MQQLQIQJ5FDX · pith_short_16: MQQLQIQJ5FDXVTPC · pith_short_8: MQQLQIQJ

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/MQQLQIQJ5FDXVTPC7KLURMM2RD \
  | 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: 6420b82209e9477acde2fa9748b19a88df8bf48f10c78f6c3b9a37acfea16a29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d56214317690a7bcb44cf5d228b0818d8f1a09eb42a6d321f376b707385c067",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-01-14T10:56:12Z",
    "title_canon_sha256": "3f1b1d6a308687dcafb417a8540f8447e4ddcd6a3bd3a8ed51055c9bd4f32fc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2921",
    "kind": "arxiv",
    "version": 1
  }
}