Pith Number

pith:2VMP2JXC

pith:2012:2VMP2JXCZ4ZKAG36FHHJPI5IMJ

not attested not anchored not stored refs pending

On groups with quasidiagonal C*-algebras

Caleb Eckhardt, Jos\'e Carri\'on, Marius Dadarlat

arxiv:1210.4050 v3 · 2012-10-15 · math.OA · math.GR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2VMP2JXCZ4ZKAG36FHHJPI5IMJ}

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	2026-05-18T03:20:45.313514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d558fd26e2cf32a01b7e29ce97a3a8626da1b82875cf0f0eafd622fcdb5b20fa

Aliases

arxiv: 1210.4050 · arxiv_version: 1210.4050v3 · doi: 10.48550/arxiv.1210.4050 · pith_short_12: 2VMP2JXCZ4ZK · pith_short_16: 2VMP2JXCZ4ZKAG36 · pith_short_8: 2VMP2JXC

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/2VMP2JXCZ4ZKAG36FHHJPI5IMJ \
  | 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: d558fd26e2cf32a01b7e29ce97a3a8626da1b82875cf0f0eafd622fcdb5b20fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1231ca644c3f6114e80b41d884d71cf39282d0316b22301be1ddc1fdfcfdd83",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2012-10-15T14:35:24Z",
    "title_canon_sha256": "faaa5afb923ac9460256c74e37f6ce5288e419b41a48232d1cee4fd397b6e7a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.4050",
    "kind": "arxiv",
    "version": 3
  }
}