Pith Number

pith:A2VEPDQP

pith:2019:A2VEPDQPEDH4KR6NA7PECVL464

not attested not anchored not stored refs pending

A Hierarchy of Polynomial Kernels

Jouke Witteveen, Leen Torenvliet, Ralph Bottesch

arxiv:1902.11006 v1 · 2019-02-28 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2VEPDQPEDH4KR6NA7PECVL464}

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	2026-05-17T23:52:26.093212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06aa478e0f20cfc547cd07de41557cf721b4fa0049f4cd291e6a4ecf9483c673

Aliases

arxiv: 1902.11006 · arxiv_version: 1902.11006v1 · doi: 10.48550/arxiv.1902.11006 · pith_short_12: A2VEPDQPEDH4 · pith_short_16: A2VEPDQPEDH4KR6N · pith_short_8: A2VEPDQP

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/A2VEPDQPEDH4KR6NA7PECVL464 \
  | 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: 06aa478e0f20cfc547cd07de41557cf721b4fa0049f4cd291e6a4ecf9483c673

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e1fc91f4af691956c8d791fbce5d58cdd43371acc7f0f0ae41002a351ecad08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-02-28T10:47:53Z",
    "title_canon_sha256": "2dedc5014d3b017a7a372ee80ad83b37ee956093be1fbc9f05ece8c2f6acfa68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.11006",
    "kind": "arxiv",
    "version": 1
  }
}