Pith Number

pith:CX6SCL34

pith:2011:CX6SCL347EBXDD7XHI5GU2T3U7

not attested not anchored not stored refs pending

Preprocessing for Treewidth: A Combinatorial Analysis through Kernelization

Bart M. P. Jansen, Hans L. Bodlaender, Stefan Kratsch

arxiv:1104.4217 v2 · 2011-04-21 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CX6SCL347EBXDD7XHI5GU2T3U7}

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	2026-05-18T02:22:01.604772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15fd212f7cf903718ff73a3a6a6a7ba7cad472640820f66ff8ad09e7029e7a2f

Aliases

arxiv: 1104.4217 · arxiv_version: 1104.4217v2 · doi: 10.48550/arxiv.1104.4217 · pith_short_12: CX6SCL347EBX · pith_short_16: CX6SCL347EBXDD7X · pith_short_8: CX6SCL34

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/CX6SCL347EBXDD7XHI5GU2T3U7 \
  | 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: 15fd212f7cf903718ff73a3a6a6a7ba7cad472640820f66ff8ad09e7029e7a2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a0aff4b761dd73f82830ca5650d696f08f8d23a1d793eb260cfb87b87b4b35e",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-04-21T09:52:16Z",
    "title_canon_sha256": "3573b708eea6885115c2c2fdedd07643722027459ca13c0af320d6cde43446bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4217",
    "kind": "arxiv",
    "version": 2
  }
}