Pith Number

pith:ZYPXX7XQ

pith:2015:ZYPXX7XQDZOTMEOOSWWLRIKME7

not attested not anchored not stored refs pending

The decision problem of modal product logics with a diagonal, and faulty counter machines

Agi Kurucz, Christopher Hampson, Stanislav Kikot

arxiv:1509.02060 v1 · 2015-09-07 · cs.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZYPXX7XQDZOTMEOOSWWLRIKME7}

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	2026-05-18T01:23:44.487457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce1f7bfef01e5d3611ce95acb8a14c27e32ebc238d30b2b7732d1122ca9e8285

Aliases

arxiv: 1509.02060 · arxiv_version: 1509.02060v1 · doi: 10.48550/arxiv.1509.02060 · pith_short_12: ZYPXX7XQDZOT · pith_short_16: ZYPXX7XQDZOTMEOO · pith_short_8: ZYPXX7XQ

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/ZYPXX7XQDZOTMEOOSWWLRIKME7 \
  | 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: ce1f7bfef01e5d3611ce95acb8a14c27e32ebc238d30b2b7732d1122ca9e8285

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34477120f715c5f27916bd8d0ce2b133ff3eae4468d56191c1d5ace38b72a218",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-09-07T14:38:20Z",
    "title_canon_sha256": "91298df8b9196200f056c07eccb451c6a9cfe20a8e044824e3bd688eca57d68b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02060",
    "kind": "arxiv",
    "version": 1
  }
}