Pith Number

pith:LEV62YAI

pith:2019:LEV62YAISNUATIIKWBWY6B73O5

not attested not anchored not stored refs pending

Detecting and Counting Small Patterns in Planar Graphs in Subexponential Parameterized Time

Jesper Nederlof

arxiv:1904.11285 v1 · 2019-04-25 · cs.DS · cs.CC · 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{LEV62YAISNUATIIKWBWY6B73O5}

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	2026-05-17T23:47:45.291296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

592bed6008936809a10ab06d8f07fb775441bc011c5cde1dccac2cbcdc976e2d

Aliases

arxiv: 1904.11285 · arxiv_version: 1904.11285v1 · doi: 10.48550/arxiv.1904.11285 · pith_short_12: LEV62YAISNUA · pith_short_16: LEV62YAISNUATIIK · pith_short_8: LEV62YAI

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/LEV62YAISNUATIIKWBWY6B73O5 \
  | 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: 592bed6008936809a10ab06d8f07fb775441bc011c5cde1dccac2cbcdc976e2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34008a04abc2bf3b1b79090d0f734363ba784649fbcfcebabf5338a3b24a6c13",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-04-25T12:11:02Z",
    "title_canon_sha256": "349f31e57df075e20f27b75ec498b775311d9df72d540da533552c25d3f64346"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11285",
    "kind": "arxiv",
    "version": 1
  }
}