Pith Number

pith:NSK2PKRU

pith:2013:NSK2PKRUNMV5I7A7DOT4RQKBEL

not attested not anchored not stored refs pending

Nonexistence of the final first integral in the Zipoy-Voorhees space-time

Andrzej J. Maciejewski, Maria Przybylska, Tomasz Stachowiak

arxiv:1302.4234 v3 · 2013-02-18 · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NSK2PKRUNMV5I7A7DOT4RQKBEL}

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	2026-05-18T03:11:22.733300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c95a7aa346b2bd47c1f1ba7c8c14122e5969dda11e4a8601036ca790bfa4de0

Aliases

arxiv: 1302.4234 · arxiv_version: 1302.4234v3 · doi: 10.48550/arxiv.1302.4234 · pith_short_12: NSK2PKRUNMV5 · pith_short_16: NSK2PKRUNMV5I7A7 · pith_short_8: NSK2PKRU

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/NSK2PKRUNMV5I7A7DOT4RQKBEL \
  | 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: 6c95a7aa346b2bd47c1f1ba7c8c14122e5969dda11e4a8601036ca790bfa4de0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bbd4a28096b1b8dcffa8da0748dfbf8165773265af8e8da247315afc3538f60",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-02-18T11:45:43Z",
    "title_canon_sha256": "6a5187a6b8f722b59dc2cd82c9e0ba9713c885c91c805e8a8ced63a020244b17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4234",
    "kind": "arxiv",
    "version": 3
  }
}