Pith Number

pith:CZ427ANZ

pith:2017:CZ427ANZTJJPRCCJ6JPNQGUI3N

not attested not anchored not stored refs pending

Anisotropic cosmological solutions in $R + R^2$ gravity

Aleksey Toporensky, Alexei A. Starobinsky, Angelo Ricciardone, Daniel M\"uller

arxiv:1710.08753 v1 · 2017-10-24 · 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{CZ427ANZTJJPRCCJ6JPNQGUI3N}

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	2026-05-18T00:16:30.784872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1679af81b99a52f88849f25ed81a88db69ae0cee8bada9b660fb40842d3314c7

Aliases

arxiv: 1710.08753 · arxiv_version: 1710.08753v1 · doi: 10.48550/arxiv.1710.08753 · pith_short_12: CZ427ANZTJJP · pith_short_16: CZ427ANZTJJPRCCJ · pith_short_8: CZ427ANZ

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/CZ427ANZTJJPRCCJ6JPNQGUI3N \
  | 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: 1679af81b99a52f88849f25ed81a88db69ae0cee8bada9b660fb40842d3314c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3225a85abdbfe379c4ad28e7231f73381a814e64a9dd1ed5b2e5c309342908ed",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-10-24T13:19:22Z",
    "title_canon_sha256": "635fcd8a898a3761439ffedffa38e8ba9d1c84627e3d39c5f4d140d2cc9e0125"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.08753",
    "kind": "arxiv",
    "version": 1
  }
}