Pith Number

pith:PV3CZLHR

pith:2022:PV3CZLHR76M3XGKCHA7QCJB2A6

not attested not anchored not stored refs pending

Computing Tree Decompositions with Small Independence Number

Cl\'ement Dallard, Fedor V. Fomin, Martin Milani\v{c}, Petr A. Golovach, Tuukka Korhonen

arxiv:2207.09993 v4 · 2022-07-20 · 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{PV3CZLHR76M3XGKCHA7QCJB2A6}

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	2026-07-05T12:07:51.733854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d762cacf1ff99bb9942383f01243a079bcdb999f584b485f455569380188c06

Aliases

arxiv: 2207.09993 · arxiv_version: 2207.09993v4 · doi: 10.48550/arxiv.2207.09993 · pith_short_12: PV3CZLHR76M3 · pith_short_16: PV3CZLHR76M3XGKC · pith_short_8: PV3CZLHR

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/PV3CZLHR76M3XGKCHA7QCJB2A6 \
  | 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: 7d762cacf1ff99bb9942383f01243a079bcdb999f584b485f455569380188c06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa7e0781ad4ccb57777a7f7c0130dbe0d1f786280502ae129cb09669f25bd227",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2022-07-20T15:53:53Z",
    "title_canon_sha256": "2b280c6a468bfc5eae5184cb547480dcac05041b05c54ec7f126065fe00248f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.09993",
    "kind": "arxiv",
    "version": 4
  }
}