Pith Number

pith:HV4ZXKPY

pith:2018:HV4ZXKPYBAB565BFHBLKS6R352

not attested not anchored not stored refs pending

The Penrose process, superradiance and ergoregion instabilities

Jorge C. Lopes, Rodrigo Vicente, Vitor Cardoso

arxiv:1803.08060 v1 · 2018-03-21 · gr-qc · astro-ph.HE · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HV4ZXKPYBAB565BFHBLKS6R352}

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.

Cited by

1 paper in Pith

Superradiance -- the 2020 Edition

Receipt and verification

First computed	2026-05-18T00:16:25.206229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d799ba9f80803df74253856a97a3beea25a1129d1814c02748662475219e76e

Aliases

arxiv: 1803.08060 · arxiv_version: 1803.08060v1 · doi: 10.48550/arxiv.1803.08060 · pith_short_12: HV4ZXKPYBAB5 · pith_short_16: HV4ZXKPYBAB565BF · pith_short_8: HV4ZXKPY

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/HV4ZXKPYBAB565BFHBLKS6R352 \
  | 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: 3d799ba9f80803df74253856a97a3beea25a1129d1814c02748662475219e76e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51514bffd65369e6faed0202a4b4b8dcc3be553676c6e21f6c99b68fe29d93a7",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-03-21T18:00:20Z",
    "title_canon_sha256": "a0cafd0529f4f1cb6612be60b9c35eba611f934e997b77f79730ee8bd638a20b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.08060",
    "kind": "arxiv",
    "version": 1
  }
}