Pith Number

pith:UYEFXPW3

pith:2012:UYEFXPW3HN2TZKOWEDSK52EBWC

not attested not anchored not stored refs pending

A General Framework for the Derivation of Regular Expressions

Jean-Marc Champarnaud, Ludovic Mignot, Pascal Caron

arxiv:1212.5003 v1 · 2012-12-20 · 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{UYEFXPW3HN2TZKOWEDSK52EBWC}

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	2026-05-17T23:53:35.916838Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6085bbedb3b753ca9d620e4aee881b08c540a2b195c4c3f86e4c96dca1b2a95

Aliases

arxiv: 1212.5003 · arxiv_version: 1212.5003v1 · doi: 10.48550/arxiv.1212.5003 · pith_short_12: UYEFXPW3HN2T · pith_short_16: UYEFXPW3HN2TZKOW · pith_short_8: UYEFXPW3

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/UYEFXPW3HN2TZKOWEDSK52EBWC \
  | 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: a6085bbedb3b753ca9d620e4aee881b08c540a2b195c4c3f86e4c96dca1b2a95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5982785245a717617c0781519045699c239e3cb05d1d8e92190facd3c476902",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-12-20T12:26:24Z",
    "title_canon_sha256": "96dcdc4bcd643aabe735d51baf7671f7a1a70e000ca59b1de42a750d3de0c005"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.5003",
    "kind": "arxiv",
    "version": 1
  }
}