Pith Number

pith:SIX2JXXT

pith:2013:SIX2JXXT7LAEQUFR6P2SML4EDM

not attested not anchored not stored refs pending

Irrelevant Vertices for the Planar Disjoint Paths Problem

Daniel Lokshtanov, Dimitrios M. Thilikos, Isolde Adler, Philipp Klaus Krause, Saket Saurabhh, Stavros G. Kolliopoulos

arxiv:1310.2378 v4 · 2013-10-09 · math.CO · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SIX2JXXT7LAEQUFR6P2SML4EDM}

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	2026-05-18T01:12:18.923378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

922fa4def3fac04850b1f3f5262f841b26e8f451bbccebb9b6fd0ea1ac59a764

Aliases

arxiv: 1310.2378 · arxiv_version: 1310.2378v4 · doi: 10.48550/arxiv.1310.2378 · pith_short_12: SIX2JXXT7LAE · pith_short_16: SIX2JXXT7LAEQUFR · pith_short_8: SIX2JXXT

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/SIX2JXXT7LAEQUFR6P2SML4EDM \
  | 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: 922fa4def3fac04850b1f3f5262f841b26e8f451bbccebb9b6fd0ea1ac59a764

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e8b8b303aedf574a5ab7c188d44273648309cbb16a48b2e8489bacde05d8ab6",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-10-09T07:27:46Z",
    "title_canon_sha256": "f9e424df5b1b82eff09575d402cbf0900a820693b8bd390fb615312d2677b954"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2378",
    "kind": "arxiv",
    "version": 4
  }
}