Pith Number

pith:4WN4LU45

pith:2008:4WN4LU45QAEM6LSJXTDWLYQHSU

not attested not anchored not stored refs pending

Polynomial kernels for 3-leaf power graph modification problems

Anthony Perez, Christophe Paul, Stephane Bessy

arxiv:0809.2858 v2 · 2008-09-17 · cs.DM · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WN4LU45QAEM6LSJXTDWLYQHSU}

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	2026-05-18T02:15:34.497756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e59bc5d39d8008cf2e49bcc765e207952971e4e43b44ff8ee93bea76b7924cf3

Aliases

arxiv: 0809.2858 · arxiv_version: 0809.2858v2 · doi: 10.48550/arxiv.0809.2858 · pith_short_12: 4WN4LU45QAEM · pith_short_16: 4WN4LU45QAEM6LSJ · pith_short_8: 4WN4LU45

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/4WN4LU45QAEM6LSJXTDWLYQHSU \
  | 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: e59bc5d39d8008cf2e49bcc765e207952971e4e43b44ff8ee93bea76b7924cf3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "334e6f7c83249eb49ce8ab2940fe0bba31d51ba65af8402764d9f9b19b5f1f06",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2008-09-17T06:16:37Z",
    "title_canon_sha256": "2f4bdb73fb39377e6adad5b92196f396ae97ad07067ea1e13a3c1490ad39f1ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2858",
    "kind": "arxiv",
    "version": 2
  }
}