Pith Number

pith:JKBDR4VW

pith:2011:JKBDR4VWMOXXS55W7ROYF5YYFN

not attested not anchored not stored refs pending

Bidimensionality and Geometric Graphs

Daniel Lokshtanov, Fedor V. Fomin, Saket Saurabh

arxiv:1107.2221 v2 · 2011-07-12 · cs.DS · cs.CG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JKBDR4VWMOXXS55W7ROYF5YYFN}

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	2026-05-18T04:09:26.997570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a8238f2b663af7977b6fc5d82f7182b40fc666d11466bd673efc0ee866f9071

Aliases

arxiv: 1107.2221 · arxiv_version: 1107.2221v2 · doi: 10.48550/arxiv.1107.2221 · pith_short_12: JKBDR4VWMOXX · pith_short_16: JKBDR4VWMOXXS55W · pith_short_8: JKBDR4VW

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/JKBDR4VWMOXXS55W7ROYF5YYFN \
  | 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: 4a8238f2b663af7977b6fc5d82f7182b40fc666d11466bd673efc0ee866f9071

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22eecd13f119c0cfaa124c2fa6cb89aba59130ddf143bd98451e295ce3cd8fcc",
    "cross_cats_sorted": [
      "cs.CG",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-07-12T09:16:54Z",
    "title_canon_sha256": "c1c2e464b696b75eb096bdbc842e5011d1303a79d164552ca3c59a449001749e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2221",
    "kind": "arxiv",
    "version": 2
  }
}