Pith Number

pith:R4FL5QAN

pith:2018:R4FL5QANCSWGFAGXZYSTN6R5YQ

not attested not anchored not stored refs pending

Type D Spacetimes and the Weyl Double Copy

Andres Luna, Donal O'Connell, Isobel Nicholson, Ricardo Monteiro

arxiv:1810.08183 v2 · 2018-10-18 · hep-th · 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{R4FL5QANCSWGFAGXZYSTN6R5YQ}

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

8 papers in Pith

The Smarr Formula is Gauss's Law: A Kerr-Schild Single-Copy Perspective

Hawking Radiation meets the Double Copy

Weyl double copy in Lifshitz spacetimes

The Penrose Transform and the Kerr-Schild double copy

Minisuperspace Double Copy in Lifshitz Spacetimes

Receipt and verification

First computed	2026-05-17T23:49:40.909638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f0abec00d14ac6280d7ce2536fa3dc41f7d0a7f16df7964790743ce40f7b586

Aliases

arxiv: 1810.08183 · arxiv_version: 1810.08183v2 · doi: 10.48550/arxiv.1810.08183 · pith_short_12: R4FL5QANCSWG · pith_short_16: R4FL5QANCSWGFAGX · pith_short_8: R4FL5QAN

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/R4FL5QANCSWGFAGXZYSTN6R5YQ \
  | 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: 8f0abec00d14ac6280d7ce2536fa3dc41f7d0a7f16df7964790743ce40f7b586

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "052b80f8a82eb284ae230b06c13d14033ff1171ee5b48b84fd468e162a00ae83",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-10-18T17:48:22Z",
    "title_canon_sha256": "b38546069fbb3984543472298b2cea62ed181635724fdc76283bfda9014a7273"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08183",
    "kind": "arxiv",
    "version": 2
  }
}