Pith Number

pith:TWSRKHAD

pith:2012:TWSRKHADTITD23SEUTXQ4ZC3JJ

not attested not anchored not stored refs pending

All homogeneous pure radiation spacetimes satisfy the Einstein-Maxwell equations

C. G. Torre

arxiv:1202.5971 v1 · 2012-02-27 · 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{TWSRKHADTITD23SEUTXQ4ZC3JJ}

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	2026-05-18T01:58:19.224083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9da5151c039a263d6e44a4ef0e645b4a51be53682a4131db8fb0a608f820915c

Aliases

arxiv: 1202.5971 · arxiv_version: 1202.5971v1 · doi: 10.48550/arxiv.1202.5971 · pith_short_12: TWSRKHADTITD · pith_short_16: TWSRKHADTITD23SE · pith_short_8: TWSRKHAD

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/TWSRKHADTITD23SEUTXQ4ZC3JJ \
  | 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: 9da5151c039a263d6e44a4ef0e645b4a51be53682a4131db8fb0a608f820915c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc4c851ac15ed807e16df53365ed1df9cb7ca6490d885b08f0a5b97f560fd91f",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-02-27T15:23:00Z",
    "title_canon_sha256": "b7ee7a429df5cbf6b8ce0ab06df966b9edc8446069b1c171280a6c26f067ec14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5971",
    "kind": "arxiv",
    "version": 1
  }
}