Pith Number

pith:7M7BHRJ2

pith:1998:7M7BHRJ2VVS3LJ6YPVJ3GJAIEZ

not attested not anchored not stored refs pending

Black hole interacting with matter as a simple dynamical system

P. Hajicek

arxiv:gr-qc/9807042 v1 · 1998-07-16 · 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{7M7BHRJ2VVS3LJ6YPVJ3GJAIEZ}

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	2026-05-18T01:39:18.482638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb3e13c53aad65b5a7d87d53b3240826750519fc0ae10dc06510a3b8671b1965

Aliases

arxiv: gr-qc/9807042 · arxiv_version: gr-qc/9807042v1 · doi: 10.48550/arxiv.gr-qc/9807042 · pith_short_12: 7M7BHRJ2VVS3 · pith_short_16: 7M7BHRJ2VVS3LJ6Y · pith_short_8: 7M7BHRJ2

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/7M7BHRJ2VVS3LJ6YPVJ3GJAIEZ \
  | 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: fb3e13c53aad65b5a7d87d53b3240826750519fc0ae10dc06510a3b8671b1965

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d57be5626d50e6aa0f529737a6c04a249ae7a1c129482363f6b2917c3949395f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1998-07-16T13:40:54Z",
    "title_canon_sha256": "0e49f00b43b4c8a356420bb7bf2b09880ce394008d98f71eecfa1052bebdac6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9807042",
    "kind": "arxiv",
    "version": 1
  }
}