Pith Number

pith:BFLCGVJF

pith:2016:BFLCGVJFETOD7DWPWTYWIIZHYQ

not attested not anchored not stored refs pending

Countable OD sets of reals belong to the ground model

Vassily Lyubetsky, Vladimir Kanovei

arxiv:1609.01032 v3 · 2016-09-05 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BFLCGVJFETOD7DWPWTYWIIZHYQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:08:05.326002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

095623552524dc3f8ecfb4f1642327c433405c57731515cd6db0fb7ec8dc6edd

Aliases

arxiv: 1609.01032 · arxiv_version: 1609.01032v3 · doi: 10.48550/arxiv.1609.01032 · pith_short_12: BFLCGVJFETOD · pith_short_16: BFLCGVJFETOD7DWP · pith_short_8: BFLCGVJF

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/BFLCGVJFETOD7DWPWTYWIIZHYQ \
  | 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: 095623552524dc3f8ecfb4f1642327c433405c57731515cd6db0fb7ec8dc6edd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1835338482bf77f42a0f68da9db1c77e228f170f4d0daf5e176337b77f9d238",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2016-09-05T06:11:27Z",
    "title_canon_sha256": "6a04bb30ee3500c94a6489b7c28e139ce4d7521929c80fff4a3052191c65129c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.01032",
    "kind": "arxiv",
    "version": 3
  }
}