Pith Number

pith:ZXUSZAYD

pith:2018:ZXUSZAYDP3LUQBPYYMBGBDL46E

not attested not anchored not stored refs pending

From Regular Expression Matching to Parsing

Inge Li G{\o}rtz, Philip Bille

arxiv:1804.02906 v2 · 2018-04-09 · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZXUSZAYDP3LUQBPYYMBGBDL46E}

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	2026-05-17T23:55:21.016584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cde92c83037ed74805f8c302608d7cf132225555f695ad8fccdc396ab66e886a

Aliases

arxiv: 1804.02906 · arxiv_version: 1804.02906v2 · doi: 10.48550/arxiv.1804.02906 · pith_short_12: ZXUSZAYDP3LU · pith_short_16: ZXUSZAYDP3LUQBPY · pith_short_8: ZXUSZAYD

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/ZXUSZAYDP3LUQBPYYMBGBDL46E \
  | 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: cde92c83037ed74805f8c302608d7cf132225555f695ad8fccdc396ab66e886a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd47fdd2bd53d7495675ad47a091f6379bd90f3f96763089ab49ed2604c31e28",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-04-09T10:46:48Z",
    "title_canon_sha256": "8005127ec7bdf37a1f7bd439a212d08f7a1357f2a4fc2f6b1d827c97ddb8613d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02906",
    "kind": "arxiv",
    "version": 2
  }
}