Pith Number

pith:YQIHDY2H

pith:2001:YQIHDY2H2TBDMIH2J5S2DCMMZ4

not attested not anchored not stored refs pending

Some results on the integrability of Einstein's field equations for axistationary perfect fluids

G. Fodor, M. Bradley, M. Marklund, Z. Perjes

arxiv:gr-qc/0101072 v1 · 2001-01-17 · 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{YQIHDY2H2TBDMIH2J5S2DCMMZ4}

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	2026-05-18T00:37:16.803858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c41071e347d4c23620fa4f65a1898ccf0871bad48e5adba19cd3504b6700f0a7

Aliases

arxiv: gr-qc/0101072 · arxiv_version: gr-qc/0101072v1 · doi: 10.48550/arxiv.gr-qc/0101072 · pith_short_12: YQIHDY2H2TBD · pith_short_16: YQIHDY2H2TBDMIH2 · pith_short_8: YQIHDY2H

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/YQIHDY2H2TBDMIH2J5S2DCMMZ4 \
  | 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: c41071e347d4c23620fa4f65a1898ccf0871bad48e5adba19cd3504b6700f0a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0500397f06ec14467851f2536204d251b20c2b3f83cd2ca827cbf5ecfd57e747",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-01-17T16:31:04Z",
    "title_canon_sha256": "fb30460ddd0903871ed41151a7047129a8278e47632e20e63befdbf6539dc4bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0101072",
    "kind": "arxiv",
    "version": 1
  }
}