Pith Number

pith:KTMLW3BU

pith:2015:KTMLW3BUIZO6AQWYQFI2BD5KJJ

not attested not anchored not stored refs pending

Fully polynomial-time parameterized computations for graphs and matrices of low treewidth

Daniel Lokshtanov, Fedor V. Fomin, Marcin Wrochna, Micha{\l} Pilipczuk, Saket Saurabh

arxiv:1511.01379 v1 · 2015-11-04 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KTMLW3BUIZO6AQWYQFI2BD5KJJ}

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	2026-05-18T01:27:47.288229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54d8bb6c34465de042d88151a08faa4a6e4caa48a2e8fa43b37e0312ef8b8510

Aliases

arxiv: 1511.01379 · arxiv_version: 1511.01379v1 · doi: 10.48550/arxiv.1511.01379 · pith_short_12: KTMLW3BUIZO6 · pith_short_16: KTMLW3BUIZO6AQWY · pith_short_8: KTMLW3BU

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/KTMLW3BUIZO6AQWYQFI2BD5KJJ \
  | 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: 54d8bb6c34465de042d88151a08faa4a6e4caa48a2e8fa43b37e0312ef8b8510

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95811ee41bda77bc5de7538b5c32ee3aeb1c59bd4ca78aa5ba23870aaf351af7",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-11-04T16:06:09Z",
    "title_canon_sha256": "a1618b922ad7bc3ba42d214cce1439896e8cc4075578b5113486debafbf5f452"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.01379",
    "kind": "arxiv",
    "version": 1
  }
}