Pith Number

pith:YR6EEQYV

pith:2004:YR6EEQYVG5HBKMBYX4FAWVW23P

not attested not anchored not stored refs pending

Matching of spatially homogeneous non-stationary space--times to vacuum in cylindrical symmetry

Filipe C. Mena (Oxford/Minho), Paul Tod (Oxford)

arxiv:gr-qc/0405102 v1 · 2004-05-18 · 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{YR6EEQYVG5HBKMBYX4FAWVW23P}

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	2026-05-18T04:15:37.267716Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c47c424315374e153038bf0a0b56dadbe55ddf893fbaebd84eabfb657638e492

Aliases

arxiv: gr-qc/0405102 · arxiv_version: gr-qc/0405102v1 · doi: 10.48550/arxiv.gr-qc/0405102 · pith_short_12: YR6EEQYVG5HB · pith_short_16: YR6EEQYVG5HBKMBY · pith_short_8: YR6EEQYV

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/YR6EEQYVG5HBKMBYX4FAWVW23P \
  | 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: c47c424315374e153038bf0a0b56dadbe55ddf893fbaebd84eabfb657638e492

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4eca02cde9439158a296829a5295dbe376c1e3b99acec1a2e409f9fee9572d22",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-05-18T22:22:08Z",
    "title_canon_sha256": "df45e0de026e13c2dc34e9ac4076421db4ef81570340e56c845be506b9a55b78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0405102",
    "kind": "arxiv",
    "version": 1
  }
}