Pith Number

pith:IEMEMLY7

pith:2010:IEMEMLY7BO2QAVTAXQJPM5F4US

not attested not anchored not stored refs pending

Are there any good digraph width measures?

Daniel Meister, Jan Obdr\v{z}\'alek, Joachim Kneis, Peter Rossmanith, Petr Hlin\v{e}n\'y, Robert Ganian, Somnath Sikdar

arxiv:1004.1485 v1 · 2010-04-09 · cs.DM · 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{IEMEMLY7BO2QAVTAXQJPM5F4US}

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	2026-05-18T01:09:24.086846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4118462f1f0bb5005660bc12f674bca486a88ab2a5d0b92ed5c91dc1da839161

Aliases

arxiv: 1004.1485 · arxiv_version: 1004.1485v1 · doi: 10.48550/arxiv.1004.1485 · pith_short_12: IEMEMLY7BO2Q · pith_short_16: IEMEMLY7BO2QAVTA · pith_short_8: IEMEMLY7

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/IEMEMLY7BO2QAVTAXQJPM5F4US \
  | 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: 4118462f1f0bb5005660bc12f674bca486a88ab2a5d0b92ed5c91dc1da839161

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ca191f7c39be14476ba290531aa1674520a6122e87b834d04d5b62e98823d00",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2010-04-09T07:50:34Z",
    "title_canon_sha256": "e2ee25355cdccbc641c2e5a3747b6f8fe1ce6d7180192094e990bbcfccfb2d2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.1485",
    "kind": "arxiv",
    "version": 1
  }
}