Pith Number

pith:KQW2XWHU

pith:2012:KQW2XWHUGXEOL7ZVPGGVCEFKYN

not attested not anchored not stored refs pending

Parameterized Complexity and Kernel Bounds for Hard Planning Problems

Christer B\"ackstr\"om, Peter Jonsson, Sebastian Ordyniak, Stefan Szeider

arxiv:1211.0479 v2 · 2012-11-02 · cs.DS · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KQW2XWHUGXEOL7ZVPGGVCEFKYN}

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	2026-05-18T03:18:31.465954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

542dabd8f435c8e5ff35798d5110aac35e9d9aeed93136de229fdac28311fdd5

Aliases

arxiv: 1211.0479 · arxiv_version: 1211.0479v2 · doi: 10.48550/arxiv.1211.0479 · pith_short_12: KQW2XWHUGXEO · pith_short_16: KQW2XWHUGXEOL7ZV · pith_short_8: KQW2XWHU

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/KQW2XWHUGXEOL7ZVPGGVCEFKYN \
  | 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: 542dabd8f435c8e5ff35798d5110aac35e9d9aeed93136de229fdac28311fdd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b709f3be680117619950b7abd6070a3e2d4c8cc81b5d698259cf8f4a5b65719",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-11-02T15:59:54Z",
    "title_canon_sha256": "f87afd8de5bdd43b3de439c9d00807271129fd8c366dc4c241afb026f7111134"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.0479",
    "kind": "arxiv",
    "version": 2
  }
}