Pith Number

pith:N3BE5RWQ

pith:2018:N3BE5RWQS5BVIP46LZMWDLK3S7

not attested not anchored not stored refs pending

Counting Subwords and Regular Languages

Charles J. Colbourn, Jeffrey Shallit, Ryan E. Dougherty, Thomas F. Lidbetter

arxiv:1804.11175 v2 · 2018-04-30 · 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{N3BE5RWQS5BVIP46LZMWDLK3S7}

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	2026-05-18T00:12:43.151985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ec24ec6d09743543f9e5e5961ad5b97c800069a71b67fc9b7226aa21c99edb3

Aliases

arxiv: 1804.11175 · arxiv_version: 1804.11175v2 · doi: 10.48550/arxiv.1804.11175 · pith_short_12: N3BE5RWQS5BV · pith_short_16: N3BE5RWQS5BVIP46 · pith_short_8: N3BE5RWQ

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/N3BE5RWQS5BVIP46LZMWDLK3S7 \
  | 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: 6ec24ec6d09743543f9e5e5961ad5b97c800069a71b67fc9b7226aa21c99edb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3013a795374c053677e5b7a5e76a7f68aa9e26bbbf72e0c1be9b9a8fc408eb1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-04-30T13:23:39Z",
    "title_canon_sha256": "58ec7217cc9fa4c541a1e2001d9742114532123acba0f9ca9cf2d4b53465f5c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11175",
    "kind": "arxiv",
    "version": 2
  }
}