Pith Number

pith:DNLPF7D3

pith:2010:DNLPF7D3PHS3BC47PRTWKYEQZG

not attested not anchored not stored refs pending

Tree-width of hypergraphs and surface duality

Fr\'ed\'eric Mazoit (LaBRI)

arxiv:1006.3167 v2 · 2010-06-16 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DNLPF7D3PHS3BC47PRTWKYEQZG}

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	2026-05-18T04:07:17.899694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b56f2fc7b79e5b08b9f7c67656090c98bb412b7f8c6de641965778cf29156d6

Aliases

arxiv: 1006.3167 · arxiv_version: 1006.3167v2 · doi: 10.48550/arxiv.1006.3167 · pith_short_12: DNLPF7D3PHS3 · pith_short_16: DNLPF7D3PHS3BC47 · pith_short_8: DNLPF7D3

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/DNLPF7D3PHS3BC47PRTWKYEQZG \
  | 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: 1b56f2fc7b79e5b08b9f7c67656090c98bb412b7f8c6de641965778cf29156d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db3a799432bd28e1b3204331caf4e921f3d6d6781a116a4c507fa4fd833dfa7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2010-06-16T09:00:16Z",
    "title_canon_sha256": "469ccfa6672db8aa14563f3bf429505c226aafe60d6262ce0615d898a4820a7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.3167",
    "kind": "arxiv",
    "version": 2
  }
}