Pith Number

pith:OHG6EMB7

pith:2018:OHG6EMB7PQ2QPXZ67VK36KDKWR

not attested not anchored not stored refs pending

Einstein-Cartan-Dirac equations in the Newman-Penrose formalism

Abhinav Varma, Navya Gupta, Nehal Mittal, Swanand Khanapurkar, Tejinder P. Singh

arxiv:1804.11334 v2 · 2018-04-30 · gr-qc · hep-th · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OHG6EMB7PQ2QPXZ67VK36KDKWR}

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	2026-05-18T00:04:17.367358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71cde2303f7c3507df3efd55bf286ab44b193223a5563d46932bcec9fcb687a3

Aliases

arxiv: 1804.11334 · arxiv_version: 1804.11334v2 · doi: 10.48550/arxiv.1804.11334 · pith_short_12: OHG6EMB7PQ2Q · pith_short_16: OHG6EMB7PQ2QPXZ6 · pith_short_8: OHG6EMB7

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/OHG6EMB7PQ2QPXZ67VK36KDKWR \
  | 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: 71cde2303f7c3507df3efd55bf286ab44b193223a5563d46932bcec9fcb687a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91f6cd49fe8088d3e3c1555f5f1bd88ea77cede653c7eff369c2d37a013ed0a8",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-04-30T17:27:14Z",
    "title_canon_sha256": "3fe695ac81caefec348c616d7ca213c19f3c1ce5eb695e209ddb5672ccef1d98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11334",
    "kind": "arxiv",
    "version": 2
  }
}