Pith Number

pith:NSFB6QTC

pith:2014:NSFB6QTCD2BFHOSW7CPD47NLCI

not attested not anchored not stored refs pending

Star-free languages and local divisors

Manfred Kufleitner

arxiv:1408.2842 v1 · 2014-08-12 · 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{NSFB6QTCD2BFHOSW7CPD47NLCI}

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	2026-05-18T02:45:21.181611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c8a1f42621e8253ba56f89e3e7dab123e7bac117bfc01b9f790cf76d8566e0a

Aliases

arxiv: 1408.2842 · arxiv_version: 1408.2842v1 · doi: 10.48550/arxiv.1408.2842 · pith_short_12: NSFB6QTCD2BF · pith_short_16: NSFB6QTCD2BFHOSW · pith_short_8: NSFB6QTC

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/NSFB6QTCD2BFHOSW7CPD47NLCI \
  | 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: 6c8a1f42621e8253ba56f89e3e7dab123e7bac117bfc01b9f790cf76d8566e0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53bae8a99d12c7996e4e9188d6de3cf6e8900a5edf7b07ab62222437b757d4f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-08-12T20:29:22Z",
    "title_canon_sha256": "5248957c06a9b587aba4a347beb7455e7599d1804bcd238e71abbc0d61bd9e1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2842",
    "kind": "arxiv",
    "version": 1
  }
}