Pith Number

pith:OY2T2Y3K

pith:2012:OY2T2Y3KU62PAQHRKI2WOLZYZ2

not attested not anchored not stored refs pending

Answer to a question of Kolmogorov

Andr\'as M\'ath\'e, M\'arton Elekes, Rich\'ard Balka

arxiv:1210.5758 v2 · 2012-10-21 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OY2T2Y3KU62PAQHRKI2WOLZYZ2}

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	2026-05-18T02:18:31.815001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76353d636aa7b4f040f15235672f38cea9998e93914d5b2cf3f44392a472c236

Aliases

arxiv: 1210.5758 · arxiv_version: 1210.5758v2 · doi: 10.48550/arxiv.1210.5758 · pith_short_12: OY2T2Y3KU62P · pith_short_16: OY2T2Y3KU62PAQHR · pith_short_8: OY2T2Y3K

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/OY2T2Y3KU62PAQHRKI2WOLZYZ2 \
  | 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: 76353d636aa7b4f040f15235672f38cea9998e93914d5b2cf3f44392a472c236

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8894775f89d55d4136478ecf8e63198f82cee23d1cf28513974999ff90f31b44",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2012-10-21T19:54:55Z",
    "title_canon_sha256": "810fc504a21fef64b36b8c7da9dfcbd36bab258af1c9a2190596825009388ed6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5758",
    "kind": "arxiv",
    "version": 2
  }
}