Pith Number

pith:LQAFIN4Y

pith:2026:LQAFIN4YPNY3YFU3W65I63UDAK

not attested not anchored not stored refs pending

Satisfiability for Knowing How over Linear Plans is NP-complete

Carlos Areces, Pablo Barcel\'o, Pablo F. Castro, Raul Fervari, St\'ephane Demri, Valentin Cassano

arxiv:2605.19819 v1 · 2026-05-19 · 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{LQAFIN4YPNY3YFU3W65I63UDAK}

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	2026-05-20T01:06:16.167930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c005437987b71bc169bb7ba8f6e8302b901adeff0a2edebea83f30f17e743fd

Aliases

arxiv: 2605.19819 · arxiv_version: 2605.19819v1 · doi: 10.48550/arxiv.2605.19819 · pith_short_12: LQAFIN4YPNY3 · pith_short_16: LQAFIN4YPNY3YFU3 · pith_short_8: LQAFIN4Y

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/LQAFIN4YPNY3YFU3W65I63UDAK \
  | 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: 5c005437987b71bc169bb7ba8f6e8302b901adeff0a2edebea83f30f17e743fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "058b5dc0fca05beda02f2a8bdbc140ad09f4d1f14a50504d491e05f54946d1f6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-05-19T13:13:23Z",
    "title_canon_sha256": "c4c6800f858e03f1ef385fcc57164ff3aac4f939ab34fe69a579831b017cccd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.19819",
    "kind": "arxiv",
    "version": 1
  }
}