Pith Number

pith:MLOEP5QR

pith:2012:MLOEP5QRB2JDM6HFX2F36DADPP

not attested not anchored not stored refs pending

Algebraic classification of higher dimensional spacetimes based on null alignment

Alena Pravdova, Marcello Ortaggio, Vojtech Pravda

arxiv:1211.7289 v1 · 2012-11-30 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MLOEP5QRB2JDM6HFX2F36DADPP}

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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

Locally Boost Isotropic Spacetimes and the Type ${\bf D}^k$ Condition

Receipt and verification

First computed	2026-05-18T03:38:32.582181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62dc47f6110e923678e5be8bbf0c037bc5cbcefef90aefaf758bb27b6a60aeeb

Aliases

arxiv: 1211.7289 · arxiv_version: 1211.7289v1 · doi: 10.48550/arxiv.1211.7289 · pith_short_12: MLOEP5QRB2JD · pith_short_16: MLOEP5QRB2JDM6HF · pith_short_8: MLOEP5QR

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/MLOEP5QRB2JDM6HFX2F36DADPP \
  | 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: 62dc47f6110e923678e5be8bbf0c037bc5cbcefef90aefaf758bb27b6a60aeeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c45c18401db4c28dc59819bcb64a6dfaebd515b7466db6e671b990807b225f69",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-11-30T15:36:54Z",
    "title_canon_sha256": "d6827b6b17163cebb969deb04b500bdad0aff7cc5a491b7d805f3e45510deded"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.7289",
    "kind": "arxiv",
    "version": 1
  }
}