Pith Number

pith:CNWYYBQH

pith:2016:CNWYYBQHNMU5SFKOZ3GCTSDOPR

not attested not anchored not stored refs pending

Perforation conditions and almost algebraic order in Cuntz semigroups

Francesc Perera, Henning Petzka, Ramon Antoine

arxiv:1604.06718 v3 · 2016-04-22 · math.OA · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CNWYYBQHNMU5SFKOZ3GCTSDOPR}

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	2026-05-18T01:01:51.853088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

136d8c06076b29d9154ececc29c86e7c5528dc55026f8cafefffe55ae4932572

Aliases

arxiv: 1604.06718 · arxiv_version: 1604.06718v3 · doi: 10.48550/arxiv.1604.06718 · pith_short_12: CNWYYBQHNMU5 · pith_short_16: CNWYYBQHNMU5SFKO · pith_short_8: CNWYYBQH

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/CNWYYBQHNMU5SFKOZ3GCTSDOPR \
  | 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: 136d8c06076b29d9154ececc29c86e7c5528dc55026f8cafefffe55ae4932572

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "947bfac8dc3cc2e427e8e4c18f999bd333ed4a9a70b14e86f64042f4b6edf26e",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2016-04-22T15:47:17Z",
    "title_canon_sha256": "461e5cc09a3eadd517e43db4e095636562b0fbaef50bbed6fa4220403c8c96c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.06718",
    "kind": "arxiv",
    "version": 3
  }
}