Pith Number

pith:LJ6JEDO3

pith:2011:LJ6JEDO3ZNC2OJILAVLO5GPERD

not attested not anchored not stored refs pending

Bianchi $VII_A$ solutions of quadratic gravity

Daniel M\"uller, Juliano A. de Deus

arxiv:1103.5450 v2 · 2011-03-28 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LJ6JEDO3ZNC2OJILAVLO5GPERD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:58:14.184527Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a7c920ddbcb45a7250b0556ee99e488da6f10b5acf40c25a0489da36030239c

Aliases

arxiv: 1103.5450 · arxiv_version: 1103.5450v2 · doi: 10.48550/arxiv.1103.5450 · pith_short_12: LJ6JEDO3ZNC2 · pith_short_16: LJ6JEDO3ZNC2OJIL · pith_short_8: LJ6JEDO3

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/LJ6JEDO3ZNC2OJILAVLO5GPERD \
  | 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: 5a7c920ddbcb45a7250b0556ee99e488da6f10b5acf40c25a0489da36030239c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "238bbd72986689c399bb240fca52f6f029fdaaae69e5e177374c1a44e798e233",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-03-28T19:22:54Z",
    "title_canon_sha256": "28247cb97443d72aaca9113616943a0015a727412219636007d219490dc0707b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.5450",
    "kind": "arxiv",
    "version": 2
  }
}