Pith Number

pith:VDC3R533

pith:2011:VDC3R533QXQHGWCWSLEHX2B6RV

not attested not anchored not stored refs pending

A characterization of semiprojectivity for commutative C*-algebras

Adam P. W. S{\o}rensen, Hannes Thiel

arxiv:1101.1856 v2 · 2011-01-10 · math.OA · math.GN

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VDC3R533QXQHGWCWSLEHX2B6RV}

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	2026-05-18T03:34:46.506827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8c5b8f77b85e073585692c87be83e8d6b22b135112f62dfe6f5b9344c503259

Aliases

arxiv: 1101.1856 · arxiv_version: 1101.1856v2 · doi: 10.48550/arxiv.1101.1856 · pith_short_12: VDC3R533QXQH · pith_short_16: VDC3R533QXQHGWCW · pith_short_8: VDC3R533

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/VDC3R533QXQHGWCWSLEHX2B6RV \
  | 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: a8c5b8f77b85e073585692c87be83e8d6b22b135112f62dfe6f5b9344c503259

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7e0fc3861f81999f388be7787e127b98be0667128ecf01aad3eefef182b50ec",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2011-01-10T16:06:14Z",
    "title_canon_sha256": "6b74ec94634a15815028535bfcd16a8fbc8d525479d28ab439891fd5c6ffbd30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1856",
    "kind": "arxiv",
    "version": 2
  }
}