Pith Number

pith:5JXEMDOL

pith:2019:5JXEMDOL4R3UPG2DPJFZNY6PAU

not attested not anchored not stored refs pending

The classical double copy in three spacetime dimensions

Brandon Melcher, Chris D. White, Kenneth Ratliff, Mariana Carrillo Gonz\'alez, Scott Watson

arxiv:1904.11001 v1 · 2019-04-24 · 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{5JXEMDOL4R3UPG2DPJFZNY6PAU}

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

3 papers in Pith

Hawking Radiation meets the Double Copy

From BTZ Perturbations to Schwarzian Modes: A Geometrical and Perturbative Analysis

Untwisting the double copy: the zeroth copy as an optical seed

Receipt and verification

First computed	2026-05-17T23:47:15.441921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea6e460dcbe477479b437a4b96e3cf051cc2ce54d7e870ff76021178facc048f

Aliases

arxiv: 1904.11001 · arxiv_version: 1904.11001v1 · doi: 10.48550/arxiv.1904.11001 · pith_short_12: 5JXEMDOL4R3U · pith_short_16: 5JXEMDOL4R3UPG2D · pith_short_8: 5JXEMDOL

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/5JXEMDOL4R3UPG2DPJFZNY6PAU \
  | 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: ea6e460dcbe477479b437a4b96e3cf051cc2ce54d7e870ff76021178facc048f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4333927f8a35db1d8b8fea60b1b805ec12a4cca861454764818f36637853d07d",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2019-04-24T18:30:40Z",
    "title_canon_sha256": "4744f1e52a1c909ea69309c56827a155bf43f385677d3e06ff58191d47ed4154"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11001",
    "kind": "arxiv",
    "version": 1
  }
}