Pith Number

pith:OJJQC7FD

pith:1999:OJJQC7FD4ARSDIQED4UYX3P5GP

not attested not anchored not stored refs pending

Numerical Evolution in time of curvature perturbations in Kerr black holes

Ramon Lopez-Aleman

arxiv:gr-qc/9911006 v1 · 1999-11-02 · 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{OJJQC7FD4ARSDIQED4UYX3P5GP}

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	2026-05-18T04:24:25.704805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7253017ca3e02321a2041f298bedfd33f5f75b24db2d2206485306a18712a3e9

Aliases

arxiv: gr-qc/9911006 · arxiv_version: gr-qc/9911006v1 · doi: 10.48550/arxiv.gr-qc/9911006 · pith_short_12: OJJQC7FD4ARS · pith_short_16: OJJQC7FD4ARSDIQE · pith_short_8: OJJQC7FD

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/OJJQC7FD4ARSDIQED4UYX3P5GP \
  | 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: 7253017ca3e02321a2041f298bedfd33f5f75b24db2d2206485306a18712a3e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72ef9f34d4681267b70b4b2db1336db614aaf02f78d2a5ceb1a7360708583a48",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-11-02T22:03:23Z",
    "title_canon_sha256": "a47f8c2c9991a9aeb667b25f8e4a330b1eaa0570992eef7d3120d4bb93857c23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9911006",
    "kind": "arxiv",
    "version": 1
  }
}