Pith Number

pith:J2NVHVUT

pith:1994:J2NVHVUTLH5IF3IEDRZFNWOKRF

not attested not anchored not stored refs pending

Event horizons and apparent horizons in spherically symmetric geometries

Cork, Edward Malec (Physics Department, Institute of Physics, Ireland, Reymonta), UCC, UJ 30-059 Cracow

arxiv:gr-qc/9402024 v1 · 1994-02-11 · 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{J2NVHVUTLH5IF3IEDRZFNWOKRF}

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	2026-05-18T02:37:29.897104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e9b53d69359fa82ed041c7256d9ca8955f40bc6d9f8cd6545d0adde7c051c36

Aliases

arxiv: gr-qc/9402024 · arxiv_version: gr-qc/9402024v1 · doi: 10.48550/arxiv.gr-qc/9402024 · pith_short_12: J2NVHVUTLH5I · pith_short_16: J2NVHVUTLH5IF3IE · pith_short_8: J2NVHVUT

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/J2NVHVUTLH5IF3IEDRZFNWOKRF \
  | 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: 4e9b53d69359fa82ed041c7256d9ca8955f40bc6d9f8cd6545d0adde7c051c36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3656ceb6ccdb0342258e5bac26d917e4eaa210e6bdb6fe73c316b6b5fa2c6ccc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1994-02-11T11:30:43Z",
    "title_canon_sha256": "abaad7e84115a2f483d4b5acd648aa308c73ef51aa564000c7dc122a9b9b9310"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9402024",
    "kind": "arxiv",
    "version": 1
  }
}