Pith Number

pith:6XQKL2TQ

pith:2013:6XQKL2TQV3BUFCSI4P5IZL5MM5

not attested not anchored not stored refs pending

Compact operators and algebraic $K$-theory for groups which act properly and isometrically on Hilbert space

Gisela Tartaglia, Guillermo Corti\~nas

arxiv:1311.6285 v5 · 2013-11-25 · math.KT · math.AT · math.GR · 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{6XQKL2TQV3BUFCSI4P5IZL5MM5}

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	2026-05-18T02:31:21.553343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5e0a5ea70aec3428a48e3fa8cafac677eed0263456ad5fc9769a907d2022255

Aliases

arxiv: 1311.6285 · arxiv_version: 1311.6285v5 · doi: 10.48550/arxiv.1311.6285 · pith_short_12: 6XQKL2TQV3BU · pith_short_16: 6XQKL2TQV3BUFCSI · pith_short_8: 6XQKL2TQ

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/6XQKL2TQV3BUFCSI4P5IZL5MM5 \
  | 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: f5e0a5ea70aec3428a48e3fa8cafac677eed0263456ad5fc9769a907d2022255

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4d17099a83942a19d000b1b4e65198b3f92181b9c0970c249f6d4de20717018",
    "cross_cats_sorted": [
      "math.AT",
      "math.GR",
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2013-11-25T13:09:27Z",
    "title_canon_sha256": "776e261f1f17f9929ea1759e969a609190e0c48e2f8b2377b6af599a3e203c08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6285",
    "kind": "arxiv",
    "version": 5
  }
}