Pith Number

pith:NLX3NZQW

pith:2013:NLX3NZQWERMKJQKKLP6J7LEGJH

not attested not anchored not stored refs pending

The genus of regular languages

Florian Deloup, Guillaume Bonfante

arxiv:1301.4981 v6 · 2013-01-21 · cs.FL · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NLX3NZQWERMKJQKKLP6J7LEGJH}

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	2026-05-18T01:14:09.678386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6aefb6e6162458a4c14a5bfc9fac8649e7b54ae06a1438843f2ea7b800a5445a

Aliases

arxiv: 1301.4981 · arxiv_version: 1301.4981v6 · doi: 10.48550/arxiv.1301.4981 · pith_short_12: NLX3NZQWERMK · pith_short_16: NLX3NZQWERMKJQKK · pith_short_8: NLX3NZQW

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/NLX3NZQWERMKJQKKLP6J7LEGJH \
  | 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: 6aefb6e6162458a4c14a5bfc9fac8649e7b54ae06a1438843f2ea7b800a5445a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fed0644dae7d5998431e684db88977f011962833b5f4c79c46d20e5580bf9037",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2013-01-21T20:50:48Z",
    "title_canon_sha256": "a5c8a652ebdccff72f93fd11fbeab9c078cbe833e1fcb6e40b208b2a543c2568"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4981",
    "kind": "arxiv",
    "version": 6
  }
}