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Pith Number

pith:L33AX3X7

pith:2008:L33AX3X7A3XFAFWA5Y4Y36VD2J
not attested not anchored not stored refs pending

Bundles of C*-categories, II: C*-dynamical systems and Dixmier-Douady invariants

Ezio Vasselli

arxiv:0806.2520 v3 · 2008-06-16 · math.OA · math.CT · math.KT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?
Add to your LaTeX paper 
\usepackage{pith}
\pithnumber{L33AX3X7A3XFAFWA5Y4Y36VD2J}

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 2026-05-18T04:08:12.801449Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

5ef60beeff06ee5016c0ee398dfaa3d2763345246105cb3dea1d81ef73e6fcff

Aliases

arxiv: 0806.2520 · arxiv_version: 0806.2520v3 · doi: 10.48550/arxiv.0806.2520 · pith_short_12: L33AX3X7A3XF · pith_short_16: L33AX3X7A3XFAFWA · pith_short_8: L33AX3X7
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/L33AX3X7A3XFAFWA5Y4Y36VD2J \
  | 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: 5ef60beeff06ee5016c0ee398dfaa3d2763345246105cb3dea1d81ef73e6fcff
Canonical record JSON 
{
  "metadata": {
    "abstract_canon_sha256": "2b614ff7d290fcc9f99198dc9614b708450efc2d97486a5108fe720ba7ee69ba",
    "cross_cats_sorted": [
      "math.CT",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2008-06-16T08:32:23Z",
    "title_canon_sha256": "4023187d34c3788aa2c98b1f5ef680912f4c1f20d00f228ce6148ce70f6d3734"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.2520",
    "kind": "arxiv",
    "version": 3
  }
}