Pith Number

pith:5ENQGS2U

pith:2013:5ENQGS2UVXCNY3QPB2KKTL4WS7

not attested not anchored not stored refs pending

A SAT Approach to Clique-Width

Marijn J. H. Heule, Stefan Szeider

arxiv:1304.5498 v2 · 2013-04-19 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5ENQGS2UVXCNY3QPB2KKTL4WS7}

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	2026-05-18T03:12:08.733769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e91b034b54adc4dc6e0f0e94a9af9697e3316ada04f566c1f334d2a58d758124

Aliases

arxiv: 1304.5498 · arxiv_version: 1304.5498v2 · doi: 10.48550/arxiv.1304.5498 · pith_short_12: 5ENQGS2UVXCN · pith_short_16: 5ENQGS2UVXCNY3QP · pith_short_8: 5ENQGS2U

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/5ENQGS2UVXCNY3QPB2KKTL4WS7 \
  | 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: e91b034b54adc4dc6e0f0e94a9af9697e3316ada04f566c1f334d2a58d758124

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42569b90fa765d00ae6f4dac1509b977231cf08f299a46007c5cc678d3564fcf",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-04-19T18:23:16Z",
    "title_canon_sha256": "4d0619f0e9dca392bc6aeaade67850ac400cdc3099909e39d6140b4331079b2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5498",
    "kind": "arxiv",
    "version": 2
  }
}