Pith Number

pith:Z7EGXX4X

pith:1993:Z7EGXX4XQ2YXRDM3CSL47EAR2R

not attested not anchored not stored refs pending

Topological Defects in Gravitational Theories with Non Linear Lagrangians

A. Economou, C.O. Lousto, J. Audretsch

arxiv:gr-qc/9301024 v1 · 1993-02-01 · gr-qc · astro-ph · 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{Z7EGXX4XQ2YXRDM3CSL47EAR2R}

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	2026-05-18T01:06:48.211344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfc86bdf9786b1788d9b1497cf9011d477c3eec10fa4b87b23bf4841e3df7f69

Aliases

arxiv: gr-qc/9301024 · arxiv_version: gr-qc/9301024v1 · doi: 10.48550/arxiv.gr-qc/9301024 · pith_short_12: Z7EGXX4XQ2YX · pith_short_16: Z7EGXX4XQ2YXRDM3 · pith_short_8: Z7EGXX4X

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/Z7EGXX4XQ2YXRDM3CSL47EAR2R \
  | 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: cfc86bdf9786b1788d9b1497cf9011d477c3eec10fa4b87b23bf4841e3df7f69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "029095178e55540d59312975066046017abc4f6498a9d188e2e894c067428dce",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1993-02-01T15:38:31Z",
    "title_canon_sha256": "fa21d22b11274273be3e5a33351efcdebfedfd5bc27f3fc70b65f0c84805d736"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9301024",
    "kind": "arxiv",
    "version": 1
  }
}