Pith Number

pith:AARDIU75

pith:2016:AARDIU7567RHCMZGEH6SNHDN2V

not attested not anchored not stored refs pending

Derivative-Based Diagnosis of Regular Expression Ambiguity

Kenny Zhuo Ming Lu, Martin Sulzmann

arxiv:1604.06644 v2 · 2016-04-22 · 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{AARDIU7567RHCMZGEH6SNHDN2V}

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	2026-05-18T01:11:08.025482Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00223453fdf7e271332621fd269c6dd541424482e212f621421b50f033eda41a

Aliases

arxiv: 1604.06644 · arxiv_version: 1604.06644v2 · doi: 10.48550/arxiv.1604.06644 · pith_short_12: AARDIU7567RH · pith_short_16: AARDIU7567RHCMZG · pith_short_8: AARDIU75

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/AARDIU7567RHCMZGEH6SNHDN2V \
  | 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: 00223453fdf7e271332621fd269c6dd541424482e212f621421b50f033eda41a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ede87340d01d978df16df4e1ce60e3635783fd7c19e8b99f1ccd199f54d09e15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2016-04-22T13:21:10Z",
    "title_canon_sha256": "c5c7577d08fab2774c531bda68e2fbfc78e80c20821e9d14c940b3ff6249cd5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.06644",
    "kind": "arxiv",
    "version": 2
  }
}