Pith Number

pith:RGJXDO4S

pith:2026:RGJXDO4SDVEPATJBNTANJCFILT

not attested not anchored not stored refs pending

Null Raychaudhuri Equation and the Impossibility of Traversable Wormholes in Unimodular Gravity

Erick Past\'en, Marco Bosquez, Norman Cruz

arxiv:2602.00524 v2 · 2026-01-31 · 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{RGJXDO4SDVEPATJBNTANJCFILT}

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	2026-06-10T01:08:32.968292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

899371bb921d48f04d216cc0d488a85ce1c71517e9007e85667c3e641a567abb

Aliases

arxiv: 2602.00524 · arxiv_version: 2602.00524v2 · doi: 10.48550/arxiv.2602.00524 · pith_short_12: RGJXDO4SDVEP · pith_short_16: RGJXDO4SDVEPATJB · pith_short_8: RGJXDO4S

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/RGJXDO4SDVEPATJBNTANJCFILT \
  | 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: 899371bb921d48f04d216cc0d488a85ce1c71517e9007e85667c3e641a567abb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0744f75a152993d88eec79c851835188d764243dce916b4bcc01972440894b0e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2026-01-31T05:36:31Z",
    "title_canon_sha256": "e9e26e88acc14fd8e093512385bdb94cf66bffcd972687a37d218922cda5e04f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.00524",
    "kind": "arxiv",
    "version": 2
  }
}