Pith Number

pith:CLY4PM5O

pith:2013:CLY4PM5OUZQNS4CPDG5PHFDMSY

not attested not anchored not stored refs pending

Einstein static Universe in hybrid metric-Palatini gravity

Christian G. Boehmer, Francisco S. N. Lobo, Nicola Tamanini

arxiv:1305.0025 v2 · 2013-04-30 · 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{CLY4PM5OUZQNS4CPDG5PHFDMSY}

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	2026-05-18T02:26:53.127991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12f1c7b3aea660d9704f19baf3946c9638794a773f30c47ae63989e57dd41b59

Aliases

arxiv: 1305.0025 · arxiv_version: 1305.0025v2 · doi: 10.48550/arxiv.1305.0025 · pith_short_12: CLY4PM5OUZQN · pith_short_16: CLY4PM5OUZQNS4CP · pith_short_8: CLY4PM5O

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/CLY4PM5OUZQNS4CPDG5PHFDMSY \
  | 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: 12f1c7b3aea660d9704f19baf3946c9638794a773f30c47ae63989e57dd41b59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e818cf3070f18f48834edb0a9297a6f7ca0e14511f3fdab10c039dd6d74eace0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-04-30T20:51:32Z",
    "title_canon_sha256": "6d1a2050a994cd9b8c2e70145fdf9b8f84b5d08fdfd67357c09fdeb12ee42240"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0025",
    "kind": "arxiv",
    "version": 2
  }
}