Pith Number

pith:OFADBBBV

pith:2011:OFADBBBVK4HT4BOF7HTQ4PTDQE

not attested not anchored not stored refs pending

Pointwise Definable Models of Set Theory

David Linetsky, Joel David Hamkins, Jonas Reitz

arxiv:1105.4597 v2 · 2011-05-23 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OFADBBBVK4HT4BOF7HTQ4PTDQE}

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	2026-05-18T03:53:17.629971Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7140308435570f3e05c5f9e70e3e6381127455bbe3d0bf2058c852f6ba99b7ac

Aliases

arxiv: 1105.4597 · arxiv_version: 1105.4597v2 · doi: 10.48550/arxiv.1105.4597 · pith_short_12: OFADBBBVK4HT · pith_short_16: OFADBBBVK4HT4BOF · pith_short_8: OFADBBBV

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/OFADBBBVK4HT4BOF7HTQ4PTDQE \
  | 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: 7140308435570f3e05c5f9e70e3e6381127455bbe3d0bf2058c852f6ba99b7ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6edc7ac35f9d1ef65666ca158c450fe033f3788918a043192212d09c33837c4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2011-05-23T19:53:44Z",
    "title_canon_sha256": "87c70484ad076e929b97568c5fa23cd73e7b35708d7466070ec47bcfc2412152"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.4597",
    "kind": "arxiv",
    "version": 2
  }
}