Pith Number

pith:B5CDJL5C

pith:2018:B5CDJL5CIOEOLY7NHMNND3G4V3

not attested not anchored not stored refs pending

Incremental approaches to updating attribute reducts when refining and coarsening coverings

Guangming Lang, Mingjie Cai

arxiv:1809.00606 v1 · 2018-09-03 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B5CDJL5CIOEOLY7NHMNND3G4V3}

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	2026-05-18T00:06:33.035604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f4434afa24388e5e3ed3b1ad1ecdcaed2a3bad46c8f5ad0946b91bcc1c6063f

Aliases

arxiv: 1809.00606 · arxiv_version: 1809.00606v1 · doi: 10.48550/arxiv.1809.00606 · pith_short_12: B5CDJL5CIOEO · pith_short_16: B5CDJL5CIOEOLY7N · pith_short_8: B5CDJL5C

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/B5CDJL5CIOEOLY7NHMNND3G4V3 \
  | 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: 0f4434afa24388e5e3ed3b1ad1ecdcaed2a3bad46c8f5ad0946b91bcc1c6063f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e87c947a918ee459c3e7d3e8f151220f1e430ead6be760594b657fbc2a41b1b1",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-09-03T14:00:17Z",
    "title_canon_sha256": "5bf190f93395853796a38403fbbd709ffee719d2e92f8df8636ac6beac736773"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.00606",
    "kind": "arxiv",
    "version": 1
  }
}