Pith Number

pith:A42QNR2Y

pith:1999:A42QNR2YBYQA43VJ6K2V4JXYVR

not attested not anchored not stored refs pending

A new form of the Kerr solution

Chris Doran

arxiv:gr-qc/9910099 v3 · 1999-10-27 · gr-qc · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A42QNR2YBYQA43VJ6K2V4JXYVR}

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

2 papers in Pith

Classical limit for Dirac fermions with modified action in the presence of the black hole

Inside astronomically realistic black holes

Receipt and verification

First computed	2026-07-04T16:13:55.236368Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

073506c7580e200e6ea9f2b55e26f8ac407ce2b384c69040e16e892ee4753c57

Aliases

arxiv: gr-qc/9910099 · arxiv_version: gr-qc/9910099v3 · doi: 10.48550/arxiv.gr-qc/9910099 · pith_short_12: A42QNR2YBYQA · pith_short_16: A42QNR2YBYQA43VJ · pith_short_8: A42QNR2Y

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/A42QNR2YBYQA43VJ6K2V4JXYVR \
  | 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: 073506c7580e200e6ea9f2b55e26f8ac407ce2b384c69040e16e892ee4753c57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bc48385b04d762023d94d7dd9a029db9baa9a49e7921594a04a38695da99552",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1999-10-27T10:49:50Z",
    "title_canon_sha256": "187b65fbf5e729f2693ebc625c09ce1cfe2dc84505beff1e888c47fb62989a6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9910099",
    "kind": "arxiv",
    "version": 3
  }
}