Pith Number

pith:EXQQO377

pith:2011:EXQQO377CJCD5CQES65HCAKYF3

not attested not anchored not stored refs pending

Syntactic Complexity of Prefix-, Suffix-, Bifix-, and Factor-Free Regular Languages

Baiyu Li, Janusz Brzozowski, Yuli Ye

arxiv:1103.2986 v2 · 2011-03-15 · 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{EXQQO377CJCD5CQES65HCAKYF3}

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	2026-05-18T04:08:05.201171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25e1076fff12443e8a0497ba7101582eedaec853150130317f130fbdd78c1841

Aliases

arxiv: 1103.2986 · arxiv_version: 1103.2986v2 · doi: 10.48550/arxiv.1103.2986 · pith_short_12: EXQQO377CJCD · pith_short_16: EXQQO377CJCD5CQE · pith_short_8: EXQQO377

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/EXQQO377CJCD5CQES65HCAKYF3 \
  | 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: 25e1076fff12443e8a0497ba7101582eedaec853150130317f130fbdd78c1841

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4875e09b367e5ef39f8e47f7bbbd3f642549940238feaec6aff0df02d5f9da32",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2011-03-15T18:24:15Z",
    "title_canon_sha256": "000314f661ffe4a712637638289cecbdf648dc63d64479954e8e8e2273a66e6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.2986",
    "kind": "arxiv",
    "version": 2
  }
}