Pith Number

pith:VRSV4LSS

pith:2001:VRSV4LSSS5PUFZKTLVYPOVYOPI

not attested not anchored not stored refs pending

Exact Bianchi Identity in Regge Gravity

G. Kagel, H.W. Hamber

arxiv:gr-qc/0107031 v2 · 2001-07-10 · 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{VRSV4LSSS5PUFZKTLVYPOVYOPI}

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	2026-07-04T16:26:55.629845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac655e2e52975f42e5535d70f7570e7a043c0a8d890706ddf564dee90a32dc7f

Aliases

arxiv: gr-qc/0107031 · arxiv_version: gr-qc/0107031v2 · doi: 10.48550/arxiv.gr-qc/0107031 · pith_short_12: VRSV4LSSS5PU · pith_short_16: VRSV4LSSS5PUFZKT · pith_short_8: VRSV4LSS

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/VRSV4LSSS5PUFZKTLVYPOVYOPI \
  | 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: ac655e2e52975f42e5535d70f7570e7a043c0a8d890706ddf564dee90a32dc7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "968461db6275085e5289782907c32bf2c0a27151ad6455bf5daf2ff6151612b4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-07-10T05:47:18Z",
    "title_canon_sha256": "a2f086f8420920c2e98a28c7ea9a7cc79f945e4ce2cba3b6bf9cb19a52f27cff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0107031",
    "kind": "arxiv",
    "version": 2
  }
}