Pith Number

pith:GQHAZ5W6

pith:2013:GQHAZ5W6ZXJZ6VRBRAF3NB666L

not attested not anchored not stored refs pending

Subexponential parameterized algorithm for computing the cutwidth of a semi-complete digraph

Fedor V. Fomin, Micha{\l} Pilipczuk

arxiv:1301.7314 v1 · 2013-01-30 · cs.DS · 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{GQHAZ5W6ZXJZ6VRBRAF3NB666L}

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	2026-05-18T03:35:00.610690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

340e0cf6decdd39f5621880bb687def2f728ad98c68678ed3a46777606892b5f

Aliases

arxiv: 1301.7314 · arxiv_version: 1301.7314v1 · doi: 10.48550/arxiv.1301.7314 · pith_short_12: GQHAZ5W6ZXJZ · pith_short_16: GQHAZ5W6ZXJZ6VRB · pith_short_8: GQHAZ5W6

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/GQHAZ5W6ZXJZ6VRBRAF3NB666L \
  | 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: 340e0cf6decdd39f5621880bb687def2f728ad98c68678ed3a46777606892b5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fa45c9963a3540870472d59b6a88fdf66490633dd61303964d5f1c7f9779697",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-01-30T18:11:30Z",
    "title_canon_sha256": "018a7e30f24bb862af49dafcd40264ba1f6f72abe2673ab6fbdfc59f4af4c5e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.7314",
    "kind": "arxiv",
    "version": 1
  }
}