Pith Number

pith:HZSSBBDG

pith:2002:HZSSBBDGUOLCXTWJZJKKFB4LN3

not attested not anchored not stored refs pending

A simple C*-algebra with a finite and an infinite projection

Mikael Rordam

arxiv:math/0204339 v2 · 2002-04-29 · 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{HZSSBBDGUOLCXTWJZJKKFB4LN3}

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	2026-05-18T04:34:54.553626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e65208466a3962bcec9ca54a2878b6edb667fef1faca266f355d5db1d6ad9b3

Aliases

arxiv: math/0204339 · arxiv_version: math/0204339v2 · doi: 10.48550/arxiv.math/0204339 · pith_short_12: HZSSBBDGUOLC · pith_short_16: HZSSBBDGUOLCXTWJ · pith_short_8: HZSSBBDG

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/HZSSBBDGUOLCXTWJZJKKFB4LN3 \
  | 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: 3e65208466a3962bcec9ca54a2878b6edb667fef1faca266f355d5db1d6ad9b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f89fd57a73bb683072b5cd345338f9891b598f9f46634a6518a1b84961686968",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.OA",
    "submitted_at": "2002-04-29T12:10:52Z",
    "title_canon_sha256": "8b3b597271aec1307b6208c31321be2ccca6256d394e8aade7c1dfe1403740eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0204339",
    "kind": "arxiv",
    "version": 2
  }
}