Pith. sign in
Pith Number

pith:6VLRP7GH

pith:2020:6VLRP7GHXOY6IZBJUJSSSKRIAN
not attested not anchored not stored refs pending

Semantic Width and the Fixed-Parameter Tractability of Constraint Satisfaction Problems

Georg Gottlob, Hubie Chen, Matthias Lanzinger, Reinhard Pichler

arxiv:2007.14169 v1 · 2020-07-28 · cs.CC · cs.DB

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{6VLRP7GHXOY6IZBJUJSSSKRIAN}

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.

Cited by

1 paper in Pith

Receipt and verification
First computed 2026-07-05T01:22:55.970343Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

f55717fcc7bbb1e46429a265292a28034de3ce42227c6876d89cac7924780572

Aliases

arxiv: 2007.14169 · arxiv_version: 2007.14169v1 · doi: 10.48550/arxiv.2007.14169 · pith_short_12: 6VLRP7GHXOY6 · pith_short_16: 6VLRP7GHXOY6IZBJ · pith_short_8: 6VLRP7GH
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/6VLRP7GHXOY6IZBJUJSSSKRIAN \
  | 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: f55717fcc7bbb1e46429a265292a28034de3ce42227c6876d89cac7924780572
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "1ba03f9cd2a18a574046e9332ec034a1a0d5d4e03852b6a13fa5443f71e6e4d2",
    "cross_cats_sorted": [
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2020-07-28T12:44:03Z",
    "title_canon_sha256": "f4461cdef1e7dd90337e6c55fa9d0f23fe97f66ac88195d7360951cb2b875f9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.14169",
    "kind": "arxiv",
    "version": 1
  }
}