Pith Number

pith:4NAKIS5Q

pith:2013:4NAKIS5Q5NTPLXRDQGLXJXF5AX

not attested not anchored not stored refs pending

On the Pursuit of Generalizations for the Petrov Classification and the Goldberg-Sachs Theorem

Carlos Batista

arxiv:1311.7110 v2 · 2013-11-27 · gr-qc · hep-th · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4NAKIS5Q5NTPLXRDQGLXJXF5AX}

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

1 paper in Pith

A Pontryagin class obstruction for purely electric and purely magnetic Weyl curvature tensors

Receipt and verification

First computed	2026-05-18T02:51:48.476204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e340a44bb0eb66f5de23819774dcbd05e6b274554e993f94304e88fa12ee9915

Aliases

arxiv: 1311.7110 · arxiv_version: 1311.7110v2 · doi: 10.48550/arxiv.1311.7110 · pith_short_12: 4NAKIS5Q5NTP · pith_short_16: 4NAKIS5Q5NTPLXRD · pith_short_8: 4NAKIS5Q

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/4NAKIS5Q5NTPLXRDQGLXJXF5AX \
  | 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: e340a44bb0eb66f5de23819774dcbd05e6b274554e993f94304e88fa12ee9915

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f796499ce749fcfa2fa911d5d1b2c7daab02efbd899bffd5d215fa2300591d1d",
    "cross_cats_sorted": [
      "hep-th",
      "math.DG"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-11-27T20:22:02Z",
    "title_canon_sha256": "f0d7e7d66f00a0c6931e5c373281d65a227d4db6aacf5d1b1fd5b1c87232dcdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7110",
    "kind": "arxiv",
    "version": 2
  }
}