Pith Number

pith:TGQZVUJE

pith:2016:TGQZVUJEMJ6UK5PJQ76CHB7XNZ

not attested not anchored not stored refs pending

Algebraically special Einstein-Maxwell fields

Norbert Van den Bergh

arxiv:1605.05830 v4 · 2016-05-19 · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TGQZVUJEMJ6UK5PJQ76CHB7XNZ}

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	2026-05-18T00:55:57.985325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99a19ad124627d4575e987fc2387f76e5b00f7b86625576775229af242caeed0

Aliases

arxiv: 1605.05830 · arxiv_version: 1605.05830v4 · doi: 10.48550/arxiv.1605.05830 · pith_short_12: TGQZVUJEMJ6U · pith_short_16: TGQZVUJEMJ6UK5PJ · pith_short_8: TGQZVUJE

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/TGQZVUJEMJ6UK5PJQ76CHB7XNZ \
  | 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: 99a19ad124627d4575e987fc2387f76e5b00f7b86625576775229af242caeed0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f1e330cfb8f3b731a4b43a0366b1c9796572bb1543fd190b2eedc6540a0ed56",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2016-05-19T07:00:59Z",
    "title_canon_sha256": "a17ad3ca26208844658800be9b180a967e4e12a4e45aefc334e8de624ce2b91a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.05830",
    "kind": "arxiv",
    "version": 4
  }
}