Pith Number

pith:EN5QMIE5

pith:2011:EN5QMIE5XHK52RYXJLR7WOKE5V

not attested not anchored not stored refs pending

The Parameterised Complexity of List Problems on Graphs of Bounded Treewidth

Alexander Scott, Kitty Meeks

arxiv:1110.4077 v3 · 2011-10-18 · cs.CC · cs.DM · 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{EN5QMIE5XHK52RYXJLR7WOKE5V}

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	2026-05-18T01:09:55.612309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

237b06209db9d5dd47174ae3fb3944ed74e6a170130548bd26e91f084d933760

Aliases

arxiv: 1110.4077 · arxiv_version: 1110.4077v3 · doi: 10.48550/arxiv.1110.4077 · pith_short_12: EN5QMIE5XHK5 · pith_short_16: EN5QMIE5XHK52RYX · pith_short_8: EN5QMIE5

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/EN5QMIE5XHK52RYXJLR7WOKE5V \
  | 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: 237b06209db9d5dd47174ae3fb3944ed74e6a170130548bd26e91f084d933760

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acb813f8378720e61cb9d6189cd4a5031b73e3eda578d3c9f2c947e6880eda86",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-10-18T18:31:30Z",
    "title_canon_sha256": "904a2390bc50c774b9d1e7726503ea6f67d6f438fa282b97c06fb2ac430048fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.4077",
    "kind": "arxiv",
    "version": 3
  }
}