Pith Number

pith:UYBZ6ISF

pith:2012:UYBZ6ISFEOXVUI3OTTZGNBZS3G

not attested not anchored not stored refs pending

Borel* Sets in the Generalised Baire Space

Tapani Hyttinen, Vadim Kulikov

arxiv:1209.3933 v1 · 2012-09-18 · 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{UYBZ6ISFEOXVUI3OTTZGNBZS3G}

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	2026-05-18T03:45:22.207763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6039f224523af5a236e9cf2668732d9878d8d0e863b067d5e55acf60b0a509f

Aliases

arxiv: 1209.3933 · arxiv_version: 1209.3933v1 · doi: 10.48550/arxiv.1209.3933 · pith_short_12: UYBZ6ISFEOXV · pith_short_16: UYBZ6ISFEOXVUI3O · pith_short_8: UYBZ6ISF

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/UYBZ6ISFEOXVUI3OTTZGNBZS3G \
  | 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: a6039f224523af5a236e9cf2668732d9878d8d0e863b067d5e55acf60b0a509f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ca63a47dade8922bb2a9d7cb3f41d4564a87ce75272e9f5f6c1595db2629424",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-09-18T12:46:38Z",
    "title_canon_sha256": "f9181c167670b6e94018b63f78174b078c6dabafccae37b762286e2c0c6ba760"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3933",
    "kind": "arxiv",
    "version": 1
  }
}