Pith Number

pith:YHEM2BEA

pith:2018:YHEM2BEAPBFJZJT7PYBIGZFK66

not attested not anchored not stored refs pending

Simplicity criteria for etale groupoid $C^*$-algebras

Danny Crytser, Gabriel Nagy

arxiv:1805.11173 v2 · 2018-05-28 · 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{YHEM2BEAPBFJZJT7PYBIGZFK66}

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	2026-05-17T23:57:19.400251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1c8cd0480784a9ca67f7e028364aaf7866a044da6e8c02d1816fa531998171f

Aliases

arxiv: 1805.11173 · arxiv_version: 1805.11173v2 · doi: 10.48550/arxiv.1805.11173 · pith_short_12: YHEM2BEAPBFJ · pith_short_16: YHEM2BEAPBFJZJT7 · pith_short_8: YHEM2BEA

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/YHEM2BEAPBFJZJT7PYBIGZFK66 \
  | 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: c1c8cd0480784a9ca67f7e028364aaf7866a044da6e8c02d1816fa531998171f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44d5333c9e093eaee31cb6524cbc38e40f2f4786f840587acd8bc8060308f4c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2018-05-28T20:59:06Z",
    "title_canon_sha256": "f6f79bd49a10a512610d5cb14d73cf8fea1644d7161b528803d4a31a528f6744"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.11173",
    "kind": "arxiv",
    "version": 2
  }
}