Pith Number

pith:5IJ3ZX2K

pith:2018:5IJ3ZX2KK25YCA2MXDFWGZQXKD

not attested not anchored not stored refs pending

The Containment Problem for Unambiguous Register Automata

Antoine Mottet, Karin Quaas

arxiv:1809.08985 v2 · 2018-09-24 · 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{5IJ3ZX2KK25YCA2MXDFWGZQXKD}

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	2026-05-17T23:55:55.032107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea13bcdf4a56bb81034cb8cb63661750f48e22596d8c22e0fd26a235ddf088c8

Aliases

arxiv: 1809.08985 · arxiv_version: 1809.08985v2 · doi: 10.48550/arxiv.1809.08985 · pith_short_12: 5IJ3ZX2KK25Y · pith_short_16: 5IJ3ZX2KK25YCA2M · pith_short_8: 5IJ3ZX2K

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/5IJ3ZX2KK25YCA2MXDFWGZQXKD \
  | 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: ea13bcdf4a56bb81034cb8cb63661750f48e22596d8c22e0fd26a235ddf088c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "798fb0b1fcc464d2f531c8fc585c1686bfea7e9a5e5aa56277a8978b7bdb338c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-09-24T15:04:39Z",
    "title_canon_sha256": "d29e1af759b195aa8873ee3f106ab0601097aea8a2f4c23da51bd3fc7fc8d01b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08985",
    "kind": "arxiv",
    "version": 2
  }
}