Pith Number

pith:WURMYQHD

pith:2016:WURMYQHDNZ3AFMLT7QCHB6BZUI

not attested not anchored not stored refs pending

Geometric classification of graph $C^*$-algebras over finite graphs

Adam P.W. S{\o}rensen, Efren Ruiz, Gunnar Restorff, S{\o}ren Eilers

arxiv:1604.05439 v2 · 2016-04-19 · 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{WURMYQHDNZ3AFMLT7QCHB6BZUI}

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	2026-05-18T00:22:11.300743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b522cc40e36e7602b173fc0470f839a23064b6ce54a0531b722c7e1139f0917a

Aliases

arxiv: 1604.05439 · arxiv_version: 1604.05439v2 · doi: 10.48550/arxiv.1604.05439 · pith_short_12: WURMYQHDNZ3A · pith_short_16: WURMYQHDNZ3AFMLT · pith_short_8: WURMYQHD

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/WURMYQHDNZ3AFMLT7QCHB6BZUI \
  | 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: b522cc40e36e7602b173fc0470f839a23064b6ce54a0531b722c7e1139f0917a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55a3f0ab9acce74dda87007240cf1571199e54f2e1c41fff646e68afd56734d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2016-04-19T06:09:43Z",
    "title_canon_sha256": "e40892a8e1351a1d557d78f0f2136e3c2427d8e8648f88ffa92e5222093155d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.05439",
    "kind": "arxiv",
    "version": 2
  }
}