Pith Number

pith:PXPZ2CSJ

pith:2018:PXPZ2CSJUNRZKOS4HRZOD7EBEZ

not attested not anchored not stored refs pending

Finding a Maximum-Weight Convex Set in a Chordal Graph

Jean Cardinal, Jean-Paul Doignon, Keno Merckx

arxiv:1806.09992 v1 · 2018-06-26 · cs.DS · 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{PXPZ2CSJUNRZKOS4HRZOD7EBEZ}

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	2026-05-18T00:12:22.486249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ddf9d0a49a363953a5c3c72e1fc812675ac71ccc98b6539f64954d781d06ca1

Aliases

arxiv: 1806.09992 · arxiv_version: 1806.09992v1 · doi: 10.48550/arxiv.1806.09992 · pith_short_12: PXPZ2CSJUNRZ · pith_short_16: PXPZ2CSJUNRZKOS4 · pith_short_8: PXPZ2CSJ

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/PXPZ2CSJUNRZKOS4HRZOD7EBEZ \
  | 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: 7ddf9d0a49a363953a5c3c72e1fc812675ac71ccc98b6539f64954d781d06ca1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea005046b5469ea687612967ba23cbe3657d4f5ffec02d0f2deeca83c05ca7da",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-06-26T13:54:51Z",
    "title_canon_sha256": "acc238c7b00c705a644372daa685f3955f7ce030e9a204e5afec97ef222af8be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09992",
    "kind": "arxiv",
    "version": 1
  }
}