Pith Number

pith:ZOFZ43NO

pith:1998:ZOFZ43NOLQJKIEMUB4SCG3YJDB

not attested not anchored not stored refs pending

Three-dimensional Topology-Independent Methods to Look for Global Topology

Boudewijn F. Roukema (Obs. de Strasbourg, CAMK, Strasbourg), Universite Louis Pasteur, Vincent Blanloeil (IRMA, Warsaw)

arxiv:astro-ph/9802083 v2 · 1998-02-06 · astro-ph · 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{ZOFZ43NOLQJKIEMUB4SCG3YJDB}

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	2026-05-18T04:24:26.388151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb8b9e6dae5c12a411940f24236f091844fe35faa4d016d1f9130fdf87ef5e00

Aliases

arxiv: astro-ph/9802083 · arxiv_version: astro-ph/9802083v2 · doi: 10.48550/arxiv.astro-ph/9802083 · pith_short_12: ZOFZ43NOLQJK · pith_short_16: ZOFZ43NOLQJKIEMU · pith_short_8: ZOFZ43NO

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/ZOFZ43NOLQJKIEMUB4SCG3YJDB \
  | 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: cb8b9e6dae5c12a411940f24236f091844fe35faa4d016d1f9130fdf87ef5e00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85a70c14272598820d8a26772f3dd14a892c208983b83333c3e9943d391c1f0a",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-02-06T21:18:22Z",
    "title_canon_sha256": "eaaf785e9a82675c7ddf34b1be787c8900e34c82ecf60d3309132480fa3a90a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9802083",
    "kind": "arxiv",
    "version": 2
  }
}