Pith Number

pith:NXQHITST

pith:2014:NXQHITSTW5ZTJHE2M4AOW6UVIT

not attested not anchored not stored refs pending

Groupoid algebras as Cuntz-Pimsner algebras

Adam Rennie, Aidan Sims, David Robertson

arxiv:1402.7126 v2 · 2014-02-28 · 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{NXQHITSTW5ZTJHE2M4AOW6UVIT}

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	2026-05-18T00:18:10.071040Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6de0744e53b773349c9a6700eb7a9544cba6cc3078217a0a8e882ff387d20ae2

Aliases

arxiv: 1402.7126 · arxiv_version: 1402.7126v2 · doi: 10.48550/arxiv.1402.7126 · pith_short_12: NXQHITSTW5ZT · pith_short_16: NXQHITSTW5ZTJHE2 · pith_short_8: NXQHITST

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/NXQHITSTW5ZTJHE2M4AOW6UVIT \
  | 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: 6de0744e53b773349c9a6700eb7a9544cba6cc3078217a0a8e882ff387d20ae2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10e3421114bac94210bfdce54164ed5ecbcca9a56a1c6db779362c54865e943d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2014-02-28T03:47:26Z",
    "title_canon_sha256": "25983456916e76657b5eff64a66595254827d34fa20478689b1deb6e55c8249e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.7126",
    "kind": "arxiv",
    "version": 2
  }
}