Pith Number

pith:QKMVAZBO

pith:2014:QKMVAZBOKVAHMBRDTZEO37RSQD

not attested not anchored not stored refs pending

Separating Regular Languages with First-Order Logic

France), Marc Zeitoun (Bordeaux University, Thomas Place (Bordeaux University

arxiv:1402.3277 v3 · 2014-02-13 · cs.FL · cs.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{QKMVAZBOKVAHMBRDTZEO37RSQD}

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	2026-05-18T00:53:11.062370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

829950642e55407606239e48edfe3280c00c2a4123f1d9d46bfad7623a3bbb9c

Aliases

arxiv: 1402.3277 · arxiv_version: 1402.3277v3 · doi: 10.48550/arxiv.1402.3277 · pith_short_12: QKMVAZBOKVAH · pith_short_16: QKMVAZBOKVAHMBRD · pith_short_8: QKMVAZBO

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/QKMVAZBOKVAHMBRDTZEO37RSQD \
  | 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: 829950642e55407606239e48edfe3280c00c2a4123f1d9d46bfad7623a3bbb9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd4ef7537bea9de05dfb9114c5fdeb47855f13d76517e2187514f8553bb1fc6f",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-02-13T20:21:16Z",
    "title_canon_sha256": "792f5847fc3ff471f8174f2140b37178565f0c5c3051181d45f7add578c42f87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3277",
    "kind": "arxiv",
    "version": 3
  }
}