Pith Number

pith:UVIOXBPR

pith:2018:UVIOXBPRVSJXYW5UQJDDJOFPCK

not attested not anchored not stored refs pending

Lengths of Words Accepted by Nondeterministic Finite Automata

Aaron Potechin, Jeffrey Shallit

arxiv:1802.04708 v1 · 2018-02-13 · 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{UVIOXBPRVSJXYW5UQJDDJOFPCK}

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	2026-05-18T00:23:41.607648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a550eb85f1ac937c5bb4824634b8af1297f8ba1e822752650a972f0b9592215b

Aliases

arxiv: 1802.04708 · arxiv_version: 1802.04708v1 · doi: 10.48550/arxiv.1802.04708 · pith_short_12: UVIOXBPRVSJX · pith_short_16: UVIOXBPRVSJXYW5U · pith_short_8: UVIOXBPR

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/UVIOXBPRVSJXYW5UQJDDJOFPCK \
  | 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: a550eb85f1ac937c5bb4824634b8af1297f8ba1e822752650a972f0b9592215b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59a56b0a61fdb19d99f24a4c74348b9b2fa2ce8cabbffd59dc3bf8c763df9cf7",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-02-13T16:23:07Z",
    "title_canon_sha256": "a147001af86f4860f52ee98c94d050a2c49b892672129513444786eb983ba335"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.04708",
    "kind": "arxiv",
    "version": 1
  }
}