Pith Number

pith:3OEYEHLR

pith:2009:3OEYEHLRDVBIIOCNOU4NLUES2G

not attested not anchored not stored refs pending

On the classification of nonsimple graph C*-algebras

Mark Tomforde, Soren Eilers

arxiv:0901.3579 v2 · 2009-01-22 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3OEYEHLRDVBIIOCNOU4NLUES2G}

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	2026-07-04T15:45:09.070668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db89821d711d4284384d7538d5d092d1abe5f5d75570fb8bc379866f7810b47c

Aliases

arxiv: 0901.3579 · arxiv_version: 0901.3579v2 · doi: 10.48550/arxiv.0901.3579 · pith_short_12: 3OEYEHLRDVBI · pith_short_16: 3OEYEHLRDVBIIOCN · pith_short_8: 3OEYEHLR

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/3OEYEHLRDVBIIOCNOU4NLUES2G \
  | 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: db89821d711d4284384d7538d5d092d1abe5f5d75570fb8bc379866f7810b47c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97bed6a6c3583351c70df14015f81fe9b3b6eea72bb4e5bac5b75971847a443e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2009-01-22T23:41:07Z",
    "title_canon_sha256": "218fa6e0be16e8691ff479df7d13eba7f109199b13692f0c317a3a2f90713b89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3579",
    "kind": "arxiv",
    "version": 2
  }
}