Pith Number

pith:OFZBO2QR

pith:2003:OFZBO2QRLB27RFW4B7NTTXUALX

not attested not anchored not stored refs pending

Vacuum solutions which cannot be written in diagonal form

F. Canfora, H.-J. Schmidt

arxiv:gr-qc/0305107 v2 · 2003-05-28 · 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{OFZBO2QRLB27RFW4B7NTTXUALX}

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	2026-05-18T01:39:23.023220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7172176a115875f896dc0fdb39de805dd21356005ae1cc3cc3301b0561d8dea7

Aliases

arxiv: gr-qc/0305107 · arxiv_version: gr-qc/0305107v2 · doi: 10.48550/arxiv.gr-qc/0305107 · pith_short_12: OFZBO2QRLB27 · pith_short_16: OFZBO2QRLB27RFW4 · pith_short_8: OFZBO2QR

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/OFZBO2QRLB27RFW4B7NTTXUALX \
  | 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: 7172176a115875f896dc0fdb39de805dd21356005ae1cc3cc3301b0561d8dea7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "556411fce81688110c794a558ac6e18973caf5e7deaf18cd1ff2b7045f3d28e1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2003-05-28T20:13:55Z",
    "title_canon_sha256": "ab7853f4904669f19703a17e415a403d87fea8a4a4f3c6af1b8732703b2e069e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0305107",
    "kind": "arxiv",
    "version": 2
  }
}