Pith Number

pith:OGW3ZV3E

pith:2018:OGW3ZV3EQ33KGTV4JUIS6EGIU7

not attested not anchored not stored refs pending

What is known about Vertex Cover Kernelization?

Aliz Izabella Kir\'aly, Frances A. Rosamond, Lars Jaffke, Mathias Weller, Michael R. Fellows

arxiv:1811.09429 v4 · 2018-11-23 · cs.DS · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OGW3ZV3EQ33KGTV4JUIS6EGIU7}

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	2026-05-17T23:46:19.113667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71adbcd76486f6a34ebc4d112f10c8a7dcbeaf1c287613b734f5a70a13c2f0aa

Aliases

arxiv: 1811.09429 · arxiv_version: 1811.09429v4 · doi: 10.48550/arxiv.1811.09429 · pith_short_12: OGW3ZV3EQ33K · pith_short_16: OGW3ZV3EQ33KGTV4 · pith_short_8: OGW3ZV3E

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/OGW3ZV3EQ33KGTV4JUIS6EGIU7 \
  | 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: 71adbcd76486f6a34ebc4d112f10c8a7dcbeaf1c287613b734f5a70a13c2f0aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7638cb4623c71c5c7668613b6e309365ffbc8a37c4840d2306a442dbf8a740c7",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-11-23T11:13:10Z",
    "title_canon_sha256": "d797cfd15b5db6abde5109ba4945ecd432e586e0eecd27728bcf5ae265764a23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.09429",
    "kind": "arxiv",
    "version": 4
  }
}