Pith Number

pith:LCL3YBA2

pith:2005:LCL3YBA2RHHS7ULUV7A6XQVKUI

not attested not anchored not stored refs pending

Graph Treewidth and Geometric Thickness Parameters

David R. Wood, Vida Dujmovi\'c

arxiv:math/0503553 v4 · 2005-03-24 · 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{LCL3YBA2RHHS7ULUV7A6XQVKUI}

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	2026-05-18T01:48:05.028341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5897bc041a89cf2fd174afc1ebc2aaa234aad3a0e5222616d1dc1fb44fa33449

Aliases

arxiv: math/0503553 · arxiv_version: math/0503553v4 · doi: 10.48550/arxiv.math/0503553 · pith_short_12: LCL3YBA2RHHS · pith_short_16: LCL3YBA2RHHS7ULU · pith_short_8: LCL3YBA2

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/LCL3YBA2RHHS7ULUV7A6XQVKUI \
  | 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: 5897bc041a89cf2fd174afc1ebc2aaa234aad3a0e5222616d1dc1fb44fa33449

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f365128ab27e51bed572907e89adb31c00e99f6801c57746e19b8cd91036baf9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2005-03-24T15:31:55Z",
    "title_canon_sha256": "e6dd8943ce9936d5046733f323a6cf4f72c64b50328021300243518ba104484a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0503553",
    "kind": "arxiv",
    "version": 4
  }
}