Pith Number

pith:ZNLWIHTX

pith:2015:ZNLWIHTXV5P4FDVKYXETGKR7Z6

not attested not anchored not stored refs pending

Beyond OWL 2 QL in OBDA: Rewritings and Approximations (Extended Version)

Alessandro Solimando, Diego Calvanese, Domenico Fabio Savo, Elena Botoeva, Guohui Xiao, Valerio Santarelli

arxiv:1511.08412 v2 · 2015-11-26 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZNLWIHTXV5P4FDVKYXETGKR7Z6}

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	2026-05-18T01:25:33.117403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb57641e77af5fc28eaac5c9332a3fcf96e42c6e4bf3a3cc213440b5ebbbc2a0

Aliases

arxiv: 1511.08412 · arxiv_version: 1511.08412v2 · doi: 10.48550/arxiv.1511.08412 · pith_short_12: ZNLWIHTXV5P4 · pith_short_16: ZNLWIHTXV5P4FDVK · pith_short_8: ZNLWIHTX

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/ZNLWIHTXV5P4FDVKYXETGKR7Z6 \
  | 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: cb57641e77af5fc28eaac5c9332a3fcf96e42c6e4bf3a3cc213440b5ebbbc2a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b435bc67b26e31de539baf9f669d7299e576e7e40dc2fd6335928c8a74d1403",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2015-11-26T15:12:20Z",
    "title_canon_sha256": "d3faf06250b7332f673e1789e3384b6fe4ab7cc036cd051e1e921e40e88b1c6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.08412",
    "kind": "arxiv",
    "version": 2
  }
}