Pith Number

pith:FL53I4IT

pith:2026:FL53I4ITONLDFVZRFVY3KVQ4C3

not attested not anchored not stored refs pending

Neighbourhood complexity and identification problems for graphs of bounded treewidth and pathwidth

Aline Parreau, Florent Foucaud, Ga\'etan Berthe, Tuomo Lehtil\"a

arxiv:2607.16889 v1 · 2026-07-18 · cs.DM · 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{FL53I4ITONLDFVZRFVY3KVQ4C3}

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	2026-07-21T01:21:04.060566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2afbb47113735632d7312d71b5561c16ec0d94a8b6caca993a96c96f85123520

Aliases

arxiv: 2607.16889 · arxiv_version: 2607.16889v1 · doi: 10.48550/arxiv.2607.16889 · pith_short_12: FL53I4ITONLD · pith_short_16: FL53I4ITONLDFVZR · pith_short_8: FL53I4IT

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/FL53I4ITONLDFVZRFVY3KVQ4C3 \
  | 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: 2afbb47113735632d7312d71b5561c16ec0d94a8b6caca993a96c96f85123520

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c906e1cb85a2f677032e0faf0e57c2301244f5e5e79e47e3edc7ce05b81c0428",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2026-07-18T17:11:16Z",
    "title_canon_sha256": "0477da420d4a68435383e175ea462cc082336c0e69c9de2785b206bd12ad4e4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.16889",
    "kind": "arxiv",
    "version": 1
  }
}