Pith Number

pith:CJB375BI

pith:2011:CJB375BIXO7JSWJBDMRIQQBT4I

not attested not anchored not stored refs pending

A characterization of weak (semi-)projectivity for commutative C*-algebras

Dominic Enders

arxiv:1102.3303 v1 · 2011-02-16 · 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{CJB375BIXO7JSWJBDMRIQQBT4I}

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	2026-05-18T04:28:36.668688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1243bff428bbbe9959211b22884033e224e1dad3657490ff46b6387094898791

Aliases

arxiv: 1102.3303 · arxiv_version: 1102.3303v1 · doi: 10.48550/arxiv.1102.3303 · pith_short_12: CJB375BIXO7J · pith_short_16: CJB375BIXO7JSWJB · pith_short_8: CJB375BI

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/CJB375BIXO7JSWJBDMRIQQBT4I \
  | 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: 1243bff428bbbe9959211b22884033e224e1dad3657490ff46b6387094898791

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e5c93d42b61f2f02b5c4cc158d4e6f49ae9cbd21d936d363a77191328640525",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2011-02-16T11:12:49Z",
    "title_canon_sha256": "af68c0a2c3081908048c1320b289e17cb7cf53022f7cacb8bc2ccc24b4d1e4fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3303",
    "kind": "arxiv",
    "version": 1
  }
}