Pith Number

pith:MQY25D5Z

pith:2019:MQY25D5ZQ6IER4P2UZ2RR7TK74

not attested not anchored not stored refs pending

A Complete Classification of the Complexity and Rewritability of Ontology-Mediated Queries based on the Description Logic EL

Carsten Lutz, Leif Sabellek

arxiv:1904.12533 v1 · 2019-04-29 · cs.CC · cs.AI · 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{MQY25D5ZQ6IER4P2UZ2RR7TK74}

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	2026-05-17T23:47:15.399506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6431ae8fb9879048f1faa67518fe6aff1fe866ddf2e93127f4f42d948a2a3067

Aliases

arxiv: 1904.12533 · arxiv_version: 1904.12533v1 · doi: 10.48550/arxiv.1904.12533 · pith_short_12: MQY25D5ZQ6IE · pith_short_16: MQY25D5ZQ6IER4P2 · pith_short_8: MQY25D5Z

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/MQY25D5ZQ6IER4P2UZ2RR7TK74 \
  | 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: 6431ae8fb9879048f1faa67518fe6aff1fe866ddf2e93127f4f42d948a2a3067

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "873e6ddce33e7813ce6c6eeffce6a840150112d1f1d6fa34bcb6af935733ac0d",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-04-29T09:34:54Z",
    "title_canon_sha256": "49c13315fab627306efebb125bfba74c7a0ac1d2529cdc19ad82d18f0c51c3dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12533",
    "kind": "arxiv",
    "version": 1
  }
}