Pith Number

pith:YDLB7SPS

pith:2019:YDLB7SPSDZNOJK4DMUQQYDNXVJ

not attested not anchored not stored refs pending

On $\mathbb R$-embeddability of almost disjoint families and Akemann-Doner C*-algebras

Michael Hru\v{s}\'ak, Osvaldo Guzm\'an, Piotr Koszmider

arxiv:1901.00517 v1 · 2019-01-02 · math.LO · math.FA · 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{YDLB7SPSDZNOJK4DMUQQYDNXVJ}

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	2026-05-17T23:57:02.274447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0d61fc9f21e5ae4ab8365210c0db7aa44fe10a154260ddbbd63b2e959f69557

Aliases

arxiv: 1901.00517 · arxiv_version: 1901.00517v1 · doi: 10.48550/arxiv.1901.00517 · pith_short_12: YDLB7SPSDZNO · pith_short_16: YDLB7SPSDZNOJK4D · pith_short_8: YDLB7SPS

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/YDLB7SPSDZNOJK4DMUQQYDNXVJ \
  | 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: c0d61fc9f21e5ae4ab8365210c0db7aa44fe10a154260ddbbd63b2e959f69557

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e20f0bff14dd67f7599ce1950dbe119f31c6aa1d30da2429f9e81a7ab9c7c4d9",
    "cross_cats_sorted": [
      "math.FA",
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-01-02T20:11:52Z",
    "title_canon_sha256": "509158ab9d3602be7994be4e662f7f69a68a29d5a7f1f2274e9a04420a72c467"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00517",
    "kind": "arxiv",
    "version": 1
  }
}