Pith Number

pith:S7ELFD5W

pith:2010:S7ELFD5WPJNVFOPCEHXEC56623

not attested not anchored not stored refs pending

Classifying $C^*$-algebras with both finite and infinite subquotients

Efren Ruiz, Gunnar Restorff, Soren Eilers

arxiv:1009.4778 v3 · 2010-09-24 · 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{S7ELFD5WPJNVFOPCEHXEC56623}

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	2026-05-18T02:02:15.738671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97c8b28fb67a5b52b9e221ee4177ded6c6751ae7ad813aae3dbfaedb80e89a83

Aliases

arxiv: 1009.4778 · arxiv_version: 1009.4778v3 · doi: 10.48550/arxiv.1009.4778 · pith_short_12: S7ELFD5WPJNV · pith_short_16: S7ELFD5WPJNVFOPC · pith_short_8: S7ELFD5W

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/S7ELFD5WPJNVFOPCEHXEC56623 \
  | 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: 97c8b28fb67a5b52b9e221ee4177ded6c6751ae7ad813aae3dbfaedb80e89a83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8339694856a946dedf9d8c0a7772bf7e83a9f38df500e3c4a5dac418b6bbdaa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2010-09-24T07:58:38Z",
    "title_canon_sha256": "cdd497861e47056b3c8dbfd4e7098cf3581d304e80b687b6587b33635129b1b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4778",
    "kind": "arxiv",
    "version": 3
  }
}