Pith Number

pith:GW77WXOA

pith:2013:GW77WXOACBXIOIRVMFGYWMFDM4

not attested not anchored not stored refs pending

The \v{C}ern\'{y} conjecture for small automata: experimental report

Jakub Kowalski, Marek Szyku{\l}a

arxiv:1301.2092 v1 · 2013-01-10 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GW77WXOACBXIOIRVMFGYWMFDM4}

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	2026-05-18T03:36:47.472429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35bffb5dc0106e872235614d8b30a3671a15c0d2c7c77162785f3fbf4e109fb0

Aliases

arxiv: 1301.2092 · arxiv_version: 1301.2092v1 · doi: 10.48550/arxiv.1301.2092 · pith_short_12: GW77WXOACBXI · pith_short_16: GW77WXOACBXIOIRV · pith_short_8: GW77WXOA

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/GW77WXOACBXIOIRVMFGYWMFDM4 \
  | 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: 35bffb5dc0106e872235614d8b30a3671a15c0d2c7c77162785f3fbf4e109fb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "586b23cf6670efe615d5b8e2018716d5d7903a6449277e7180a7fd4bef96c03b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2013-01-10T11:38:28Z",
    "title_canon_sha256": "ec580bf9e716ecbfeed40124adc54e90dc96819ac6c937ffb8d19da8df2a6833"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2092",
    "kind": "arxiv",
    "version": 1
  }
}