Pith Number

pith:6UJRAW5H

pith:2006:6UJRAW5HWPXNYWASXJID25WGSH

not attested not anchored not stored refs pending

Classification of Extensions of Classifiable C*-algebras

Efren Ruiz, Gunnar Restorff, Soren Eilers

arxiv:math/0606688 v2 · 2006-06-27 · 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{6UJRAW5HWPXNYWASXJID25WGSH}

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	2026-05-18T02:41:25.021997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f513105ba7b3eedc5812ba503d76c691e322c80e85a45c553c226072cdae6303

Aliases

arxiv: math/0606688 · arxiv_version: math/0606688v2 · doi: 10.48550/arxiv.math/0606688 · pith_short_12: 6UJRAW5HWPXN · pith_short_16: 6UJRAW5HWPXNYWAS · pith_short_8: 6UJRAW5H

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/6UJRAW5HWPXNYWASXJID25WGSH \
  | 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: f513105ba7b3eedc5812ba503d76c691e322c80e85a45c553c226072cdae6303

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c27f6cb03fa3efbdadd99d89f3d7b71c773b1220ae5c38fe05c666ba210327a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2006-06-27T17:36:05Z",
    "title_canon_sha256": "ecae36d4161f1e33c620c6c505d19e99803b3bfa96fb7bd1e967b67a1ed3c897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0606688",
    "kind": "arxiv",
    "version": 2
  }
}