Pith Number

pith:2LCOS73Q

pith:2018:2LCOS73Q73RNN2I7DFEB2JTMUC

not attested not anchored not stored refs pending

Dichotomies in Ontology-Mediated Querying with the Guarded Fragment

Andre Hernich, Carsten Lutz, Fabio Papacchini, Frank Wolter

arxiv:1804.06894 v1 · 2018-04-18 · cs.DB · 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{2LCOS73Q73RNN2I7DFEB2JTMUC}

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	2026-05-18T00:18:04.820086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2c4e97f70fee2d6e91f19481d266ca0a9b81646686f037b5c49f6ebcad7d359

Aliases

arxiv: 1804.06894 · arxiv_version: 1804.06894v1 · doi: 10.48550/arxiv.1804.06894 · pith_short_12: 2LCOS73Q73RN · pith_short_16: 2LCOS73Q73RNN2I7 · pith_short_8: 2LCOS73Q

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/2LCOS73Q73RNN2I7DFEB2JTMUC \
  | 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: d2c4e97f70fee2d6e91f19481d266ca0a9b81646686f037b5c49f6ebcad7d359

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bc988af4109a299b337e042e71bd727a94f3a28e606f0d440d189596c74a12d",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2018-04-18T19:49:15Z",
    "title_canon_sha256": "eb66fa621c5e7d0894836621d6fcc196500ceb07622496b634597f4e4e80da65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06894",
    "kind": "arxiv",
    "version": 1
  }
}