Pith Number

pith:O7QZ6OFB

pith:2010:O7QZ6OFB7DC5EOBVIIB4RDCD5B

not attested not anchored not stored refs pending

FAST: Kernelization based on Graph Modular Decomposition

Jianer Chen, Yixin Cao

arxiv:1009.5143 v2 · 2010-09-27 · 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{O7QZ6OFB7DC5EOBVIIB4RDCD5B}

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	2026-05-18T04:40:00.430896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77e19f38a1f8c5d238354203c88c43e8463389ffef6df6f20c9a08c763c1f549

Aliases

arxiv: 1009.5143 · arxiv_version: 1009.5143v2 · doi: 10.48550/arxiv.1009.5143 · pith_short_12: O7QZ6OFB7DC5 · pith_short_16: O7QZ6OFB7DC5EOBV · pith_short_8: O7QZ6OFB

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/O7QZ6OFB7DC5EOBVIIB4RDCD5B \
  | 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: 77e19f38a1f8c5d238354203c88c43e8463389ffef6df6f20c9a08c763c1f549

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40d408752da4a33a77bcb7ad6c21335baa808393ec4b8173ccce3c6ac4fe1501",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2010-09-27T02:29:59Z",
    "title_canon_sha256": "9e25ff7ff9e1a620b903ead85a3381886826f4ff47ae809b6e96df25534b2c1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5143",
    "kind": "arxiv",
    "version": 2
  }
}