Pith Number

pith:IVK37N47

pith:2013:IVK37N47XZOG2R24B3SOTQSZIH

not attested not anchored not stored refs pending

Exploring Subexponential Parameterized Complexity of Completion Problems

Fedor V. Fomin, Micha{\l} Pilipczuk, P{\aa}l Gr{\o}n{\aa}s Drange, Yngve Villanger

arxiv:1309.4022 v2 · 2013-09-16 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IVK37N47XZOG2R24B3SOTQSZIH}

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	2026-05-18T02:52:04.157425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4555bfb79fbe5c6d475c0ee4e9c25941d8447c350e0ce28f0c09d21dd8d80583

Aliases

arxiv: 1309.4022 · arxiv_version: 1309.4022v2 · doi: 10.48550/arxiv.1309.4022 · pith_short_12: IVK37N47XZOG · pith_short_16: IVK37N47XZOG2R24 · pith_short_8: IVK37N47

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/IVK37N47XZOG2R24B3SOTQSZIH \
  | 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: 4555bfb79fbe5c6d475c0ee4e9c25941d8447c350e0ce28f0c09d21dd8d80583

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae917a1a584b626322a1df1ca5f07d1b6dbde9bb412d6ca60fc46d1fe92ed326",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-09-16T16:16:41Z",
    "title_canon_sha256": "53430d1955c19236d6c1c21c8aa48e7268c5e9108e255a1a777976732fc353b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4022",
    "kind": "arxiv",
    "version": 2
  }
}