Pith Number

pith:4YIWPKO6

pith:2015:4YIWPKO6PULEULFLI34A7H46LX

not attested not anchored not stored refs pending

An ${\cal O}(n^2 \log(n))$ algorithm for the weighted stable set problem in claw-free graphs

Antonio Sassano, Paolo Nobili

arxiv:1501.05775 v7 · 2015-01-23 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4YIWPKO6PULEULFLI34A7H46LX}

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	2026-05-17T23:45:15.896986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e61167a9de7d164a2cab46f80f9f9e5ddd747a3c5748eebbac7a47400c634310

Aliases

arxiv: 1501.05775 · arxiv_version: 1501.05775v7 · doi: 10.48550/arxiv.1501.05775 · pith_short_12: 4YIWPKO6PULE · pith_short_16: 4YIWPKO6PULEULFL · pith_short_8: 4YIWPKO6

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/4YIWPKO6PULEULFLI34A7H46LX \
  | 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: e61167a9de7d164a2cab46f80f9f9e5ddd747a3c5748eebbac7a47400c634310

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77f5249fe0901a0b656795f568df778c03ea7ae9e006e50e1b74be3c3c8c340f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-01-23T11:40:47Z",
    "title_canon_sha256": "b9ccdac6da782c3704296088dca460fa780a9c39a01dac76a24047431ebae143"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05775",
    "kind": "arxiv",
    "version": 7
  }
}