Pith Number

pith:OOJ3VODY

pith:2014:OOJ3VODY5UISJGMTB5CDZX3ZEE

not attested not anchored not stored refs pending

Comparison of two approximation schemes for solving perturbations in a LTB cosmological model

Chul-Moon Yoo, Ken-ichi Nakao, Ryusuke Nishikawa

arxiv:1407.4899 v2 · 2014-07-18 · astro-ph.CO · 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{OOJ3VODY5UISJGMTB5CDZX3ZEE}

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	2026-05-18T02:38:09.498187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7393bab878ed112499930f443cdf79211a29a52c399047fc323b7913891d05e6

Aliases

arxiv: 1407.4899 · arxiv_version: 1407.4899v2 · doi: 10.48550/arxiv.1407.4899 · pith_short_12: OOJ3VODY5UIS · pith_short_16: OOJ3VODY5UISJGMT · pith_short_8: OOJ3VODY

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/OOJ3VODY5UISJGMTB5CDZX3ZEE \
  | 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: 7393bab878ed112499930f443cdf79211a29a52c399047fc323b7913891d05e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8260d0452e589ab55aad65d5a9ce6436bf2d7160084122d26668c37e2ad21203",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-07-18T07:11:56Z",
    "title_canon_sha256": "965eb9122b325a5b11af76cc17815616788f969850b859c6e09e2661c22387d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.4899",
    "kind": "arxiv",
    "version": 2
  }
}