Pith Number

pith:QBP4KY6S

pith:2018:QBP4KY6SKEWPHJWKIATJ4WYMDG

not attested not anchored not stored refs pending

Subset synchronization of DFAs and PFAs, and some other results

Michiel de Bondt

arxiv:1807.04661 v1 · 2018-07-07 · 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{QBP4KY6SKEWPHJWKIATJ4WYMDG}

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	2026-05-18T00:10:52.864674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

805fc563d2512cf3a6ca40269e5b0c1982183ac010b6be53861dbd9189672d8b

Aliases

arxiv: 1807.04661 · arxiv_version: 1807.04661v1 · doi: 10.48550/arxiv.1807.04661 · pith_short_12: QBP4KY6SKEWP · pith_short_16: QBP4KY6SKEWPHJWK · pith_short_8: QBP4KY6S

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/QBP4KY6SKEWPHJWKIATJ4WYMDG \
  | 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: 805fc563d2512cf3a6ca40269e5b0c1982183ac010b6be53861dbd9189672d8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36c7a571a898d21281113173c78784e7d4a58d9825eb9065f7a832c3aff8212e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-07-07T20:21:54Z",
    "title_canon_sha256": "699aa3e12097a8ebb2603ad5af4ea5de7a95220f8db9f40263dca2e0297f8612"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04661",
    "kind": "arxiv",
    "version": 1
  }
}