Pith Number

pith:V4EXDYMT

pith:1995:V4EXDYMTUC7G6ZHC7F7FCA7IZW

not attested not anchored not stored refs pending

The Robinson-Trautman Type III Prolongation Structure Contains K$_2$

III (Univ. of New Mexico), J. D. Finley

arxiv:gr-qc/9506016 v1 · 1995-06-07 · gr-qc · nlin.SI · solv-int

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V4EXDYMTUC7G6ZHC7F7FCA7IZW}

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	2026-05-18T03:47:41.710496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af0971e193a0be6f64e2f97e5103e8cd8a353fa9b254d83885bbc1979655910b

Aliases

arxiv: gr-qc/9506016 · arxiv_version: gr-qc/9506016v1 · doi: 10.48550/arxiv.gr-qc/9506016 · pith_short_12: V4EXDYMTUC7G · pith_short_16: V4EXDYMTUC7G6ZHC · pith_short_8: V4EXDYMT

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/V4EXDYMTUC7G6ZHC7F7FCA7IZW \
  | 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: af0971e193a0be6f64e2f97e5103e8cd8a353fa9b254d83885bbc1979655910b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41307f2e133e1bac7822306b258d2f8ffb128b47d00f6ae11d40438a5bf0191a",
    "cross_cats_sorted": [
      "nlin.SI",
      "solv-int"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1995-06-07T19:23:16Z",
    "title_canon_sha256": "0477dd7ea53430a45d1fb1988f1115020101edcf91404b4bed11c621a2ed25ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9506016",
    "kind": "arxiv",
    "version": 1
  }
}