Pith Number

pith:ZR4BR6H4

pith:2009:ZR4BR6H4IP4BPOMIRFXYXOOJM7

not attested not anchored not stored refs pending

On the zeroth L^2-homology of a quantum group

David Kyed

arxiv:0906.0656 v2 · 2009-06-03 · math.OA · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZR4BR6H4IP4BPOMIRFXYXOOJM7}

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	2026-05-18T04:39:00.245570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc7818f8fc43f817b988896f8bb9c967c07ba5b2e9a36c9019ee691a2235c38d

Aliases

arxiv: 0906.0656 · arxiv_version: 0906.0656v2 · doi: 10.48550/arxiv.0906.0656 · pith_short_12: ZR4BR6H4IP4B · pith_short_16: ZR4BR6H4IP4BPOMI · pith_short_8: ZR4BR6H4

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/ZR4BR6H4IP4BPOMIRFXYXOOJM7 \
  | 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: cc7818f8fc43f817b988896f8bb9c967c07ba5b2e9a36c9019ee691a2235c38d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "419cfe8c669248db7100610a46a98b299da7439a1e62cafec81d91a99c31558b",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2009-06-03T07:58:35Z",
    "title_canon_sha256": "bf661a191056ac5ca064ecc749d0738f11cd2dc9586356e60d03d2f672ac2982"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0656",
    "kind": "arxiv",
    "version": 2
  }
}