Pith Number

pith:KPDPZSQ6

pith:2013:KPDPZSQ6X6NVXIFRKK7FG54UV7

not attested not anchored not stored refs pending

Faster Algorithms For Vertex Partitioning Problems Parameterized by Clique-width

Martin Vatshelle, Sang-il Oum, Sigve Hortemo S{\ae}ther

arxiv:1311.0224 v2 · 2013-11-01 · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KPDPZSQ6X6NVXIFRKK7FG54UV7}

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	2026-05-18T02:30:15.834583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53c6fcca1ebf9b5ba0b152be537794afcbe9ae0253e61a00ff456e2bde549c3f

Aliases

arxiv: 1311.0224 · arxiv_version: 1311.0224v2 · doi: 10.48550/arxiv.1311.0224 · pith_short_12: KPDPZSQ6X6NV · pith_short_16: KPDPZSQ6X6NVXIFR · pith_short_8: KPDPZSQ6

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/KPDPZSQ6X6NVXIFRKK7FG54UV7 \
  | 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: 53c6fcca1ebf9b5ba0b152be537794afcbe9ae0253e61a00ff456e2bde549c3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a0e5f6f9bc2eb834fbf419a480946ec296560859f2fac5dab51f85b05c916c2",
    "cross_cats_sorted": [
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-11-01T17:03:09Z",
    "title_canon_sha256": "947c740fa3edd4e636914710dd98907e8e440c872e9105d69cb760c20c64e5f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0224",
    "kind": "arxiv",
    "version": 2
  }
}