Pith Number

pith:4PSKLEBV

pith:2017:4PSKLEBVGNZKZG5GB3OFQZMZN2

not attested not anchored not stored refs pending

Polynomial-time algorithm for Maximum Weight Independent Set on $P_6$-free graphs

Andrzej Grzesik, Marcin Pilipczuk, Micha{\l} Pilipczuk, Tereza Klimo\v{s}ov\'a

arxiv:1707.05491 v3 · 2017-07-18 · cs.DS · cs.DM · 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{4PSKLEBVGNZKZG5GB3OFQZMZN2}

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	2026-07-05T00:49:33.383383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3e4a590353372ac9ba60edc5865996ea67b04275d85906d57710728d746d3c5

Aliases

arxiv: 1707.05491 · arxiv_version: 1707.05491v3 · doi: 10.48550/arxiv.1707.05491 · pith_short_12: 4PSKLEBVGNZK · pith_short_16: 4PSKLEBVGNZKZG5G · pith_short_8: 4PSKLEBV

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/4PSKLEBVGNZKZG5GB3OFQZMZN2 \
  | 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: e3e4a590353372ac9ba60edc5865996ea67b04275d85906d57710728d746d3c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b30c3fd736609a86616f2d8a3e7bf444e0e3379f79dd89d195c9e20785613ed",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-07-18T06:34:08Z",
    "title_canon_sha256": "ae5972cf71d4077e3c18e2df3efca835b2a2b43d09916b2bf86335aacc115767"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.05491",
    "kind": "arxiv",
    "version": 3
  }
}