Pith Number

pith:2SVQL4X2

pith:2010:2SVQL4X2CVIATFHJNW6IKDFNKX

not attested not anchored not stored refs pending

Small NFAs from Regular Expressions: Some Experimental Results

Hugo Gouveia, Nelma Moreira, Rog\'erio Reis

arxiv:1009.3599 v1 · 2010-09-19 · 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{2SVQL4X2CVIATFHJNW6IKDFNKX}

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	2026-05-18T04:40:44.459662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4ab05f2fa15500994e96dbc850cad55e0577ef648aa6cf9c61d77ae0c368b25

Aliases

arxiv: 1009.3599 · arxiv_version: 1009.3599v1 · doi: 10.48550/arxiv.1009.3599 · pith_short_12: 2SVQL4X2CVIA · pith_short_16: 2SVQL4X2CVIATFHJ · pith_short_8: 2SVQL4X2

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/2SVQL4X2CVIATFHJNW6IKDFNKX \
  | 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: d4ab05f2fa15500994e96dbc850cad55e0577ef648aa6cf9c61d77ae0c368b25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7128a8c000d92abd8b1bf90852a050a8d1a6ff6b3c705ec399def95f528f4774",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2010-09-19T02:15:49Z",
    "title_canon_sha256": "0622d7bfa4c4b948b8f1c409d2b1f01beb0657fef4866bb32b4e992947a30427"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.3599",
    "kind": "arxiv",
    "version": 1
  }
}