Pith Number

pith:6BUHF73E

pith:2008:6BUHF73EZ57FN5K2WBSN4Y23YG

not attested not anchored not stored refs pending

Algebraic Cuntz-Pimsner rings

Eduard Ortega, Toke Meier Carlsen

arxiv:0810.3254 v4 · 2008-10-17 · math.RA · 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{6BUHF73EZ57FN5K2WBSN4Y23YG}

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	2026-05-18T04:00:38.273270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f06872ff64cf7e56f55ab064de635bc1b57f5137cc3b43f0608821b5cbf1a2ac

Aliases

arxiv: 0810.3254 · arxiv_version: 0810.3254v4 · doi: 10.48550/arxiv.0810.3254 · pith_short_12: 6BUHF73EZ57F · pith_short_16: 6BUHF73EZ57FN5K2 · pith_short_8: 6BUHF73E

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/6BUHF73EZ57FN5K2WBSN4Y23YG \
  | 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: f06872ff64cf7e56f55ab064de635bc1b57f5137cc3b43f0608821b5cbf1a2ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f64b25e9bf9b18c8d903d4d94837f42c386ba3e0d0defb355e7ef28a1925c08",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2008-10-17T21:31:14Z",
    "title_canon_sha256": "36e94c04bbcb8bab6ee61c90f616fcf21b2a3a514bb056b9a1eaa8aae758df39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3254",
    "kind": "arxiv",
    "version": 4
  }
}