Pith Number

pith:4EKH3QLC

pith:2018:4EKH3QLC7QZ5VFJ7YS6CCULTJA

not attested not anchored not stored refs pending

A new class of non-aligned Einstein-Maxwell solutions with a geodesic, shearfree and non-expanding multiple Debever-Penrose vector

Norbert Van den Bergh

arxiv:1806.09950 v2 · 2018-06-26 · 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{4EKH3QLC7QZ5VFJ7YS6CCULTJA}

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	2026-05-17T23:59:16.846908Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1147dc162fc33da953fc4bc215173480fcda27a61b29c0b5f7ec0216d7dbc73

Aliases

arxiv: 1806.09950 · arxiv_version: 1806.09950v2 · doi: 10.48550/arxiv.1806.09950 · pith_short_12: 4EKH3QLC7QZ5 · pith_short_16: 4EKH3QLC7QZ5VFJ7 · pith_short_8: 4EKH3QLC

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/4EKH3QLC7QZ5VFJ7YS6CCULTJA \
  | 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: e1147dc162fc33da953fc4bc215173480fcda27a61b29c0b5f7ec0216d7dbc73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f4fac9f704493ab6f158b592d2ca5d7fa65dc79c36636d58c32fde223afd23d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-06-26T12:54:16Z",
    "title_canon_sha256": "23f9f50ed1cfcdb395ac12b616f60a0b086412fbe314c2c41ed1ff245277551d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09950",
    "kind": "arxiv",
    "version": 2
  }
}