Pith Number

pith:TNGQ3E5R

pith:2021:TNGQ3E5RFC5KETVFV5DWQ4IPNQ

not attested not anchored not stored refs pending

Twistor Space Origins of the Newman-Penrose Map

Gabriel Herczeg, Kara Farnsworth, Michael L. Graesser

arxiv:2104.09525 v3 · 2021-04-19 · hep-th · gr-qc · hep-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{TNGQ3E5RFC5KETVFV5DWQ4IPNQ}

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

4 papers in Pith

Non-topological solitons in biadjoint scalar field theory

Hawking Radiation meets the Double Copy

The Penrose Transform and the Kerr-Schild double copy

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

Receipt and verification

First computed	2026-07-05T05:09:47.891092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b4d0d93b128baa24ea5af4768710f6c1eb32ad859983d76e3b66c5e9869262e

Aliases

arxiv: 2104.09525 · arxiv_version: 2104.09525v3 · doi: 10.48550/arxiv.2104.09525 · pith_short_12: TNGQ3E5RFC5K · pith_short_16: TNGQ3E5RFC5KETVF · pith_short_8: TNGQ3E5R

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/TNGQ3E5RFC5KETVFV5DWQ4IPNQ \
  | 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: 9b4d0d93b128baa24ea5af4768710f6c1eb32ad859983d76e3b66c5e9869262e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a178a59c7548fb40fb74e27464b7c38c70fb7686959d90344c90111ad2badbd",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2021-04-19T18:00:04Z",
    "title_canon_sha256": "8e4a247be03180bcd91922b3aab334d47a60e6250768c1faf9139a63c471bb72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.09525",
    "kind": "arxiv",
    "version": 3
  }
}