Pith Number

pith:5HRIRWNG

pith:2013:5HRIRWNGLBDGIKKRPKD6FE7GWH

not attested not anchored not stored refs pending

Two-Sided Derivatives for Regular Expressions and for Hairpin Expressions

Hadrien Jeanne, Jean-Marc Champarnaud, Jean-Philippe Dubernard, Ludovic Mignot

arxiv:1301.3316 v1 · 2013-01-15 · 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{5HRIRWNGLBDGIKKRPKD6FE7GWH}

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	2026-05-18T03:36:25.844632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9e288d9a658466429517a87e293e6b1d57f3c773ae97e434a013edafeecdb44

Aliases

arxiv: 1301.3316 · arxiv_version: 1301.3316v1 · doi: 10.48550/arxiv.1301.3316 · pith_short_12: 5HRIRWNGLBDG · pith_short_16: 5HRIRWNGLBDGIKKR · pith_short_8: 5HRIRWNG

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/5HRIRWNGLBDGIKKRPKD6FE7GWH \
  | 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: e9e288d9a658466429517a87e293e6b1d57f3c773ae97e434a013edafeecdb44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17d9a358062c364262e52fd48a7215dda01304e0ea4913bd7e8edb69fe54932e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2013-01-15T12:10:34Z",
    "title_canon_sha256": "3971c71ccc8b2375c4541b6f974b928e6802a1f93ed6eae0f9c3d49d8e63d092"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.3316",
    "kind": "arxiv",
    "version": 1
  }
}