Pith Number

pith:B5CSXY5P

pith:2012:B5CSXY5PHY3PRQOZH6PI5SC726

not attested not anchored not stored refs pending

Universally Kuratowski-Ulam spaces and open-open games

Andrzej Kucharski, Piotr Kalemba

arxiv:1202.2056 v3 · 2012-02-09 · 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{B5CSXY5PHY3PRQOZH6PI5SC726}

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	2026-05-18T00:53:51.734958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f452be3af3e36f8c1d93f9e8ec85fd7a5735ff358ed2a1c6a3ded589aecf603

Aliases

arxiv: 1202.2056 · arxiv_version: 1202.2056v3 · doi: 10.48550/arxiv.1202.2056 · pith_short_12: B5CSXY5PHY3P · pith_short_16: B5CSXY5PHY3PRQOZ · pith_short_8: B5CSXY5P

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/B5CSXY5PHY3PRQOZH6PI5SC726 \
  | 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: 0f452be3af3e36f8c1d93f9e8ec85fd7a5735ff358ed2a1c6a3ded589aecf603

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "220bb333b33b6f0b09afa4813ccc6c5ebbff57cd307c2e8bac7862b13e47e62d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2012-02-09T17:37:06Z",
    "title_canon_sha256": "e392baa0613f2d4fd287dad9ac18423d1445bad2b29fb03ffd3f9ee71d3685ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2056",
    "kind": "arxiv",
    "version": 3
  }
}