Pith Number

pith:4KKZEP7B

pith:2012:4KKZEP7B4XMDSV5RJCDMM53QJ6

not attested not anchored not stored refs pending

The Dissecting Power of Regular Languages

Tomoyuki Yamakami, Yuichi Kato

arxiv:1202.4883 v3 · 2012-02-22 · cs.FL · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4KKZEP7B4XMDSV5RJCDMM53QJ6}

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	2026-05-18T02:21:17.682979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e295923fe1e5d83957b14886c677704f9cacdb43b8c92b0c320cf580c06ed309

Aliases

arxiv: 1202.4883 · arxiv_version: 1202.4883v3 · doi: 10.48550/arxiv.1202.4883 · pith_short_12: 4KKZEP7B4XMD · pith_short_16: 4KKZEP7B4XMDSV5R · pith_short_8: 4KKZEP7B

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/4KKZEP7B4XMDSV5RJCDMM53QJ6 \
  | 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: e295923fe1e5d83957b14886c677704f9cacdb43b8c92b0c320cf580c06ed309

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53b1625289ea053a623e53f95759de0b59edd59b81ad9a490cf9a271ca95e872",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-02-22T11:16:47Z",
    "title_canon_sha256": "b4d63152862820662abe12bae7600b7cb751fd2fa83b4f8b1732d5b726d433ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4883",
    "kind": "arxiv",
    "version": 3
  }
}