Pith Number

pith:HQ6YTOZW

pith:2018:HQ6YTOZWSB2IXG3B5XYU7XG2ZV

not attested not anchored not stored refs pending

Tight Approximation Ratio for Minimum Maximal Matching

Jan Marcinkowski (University of Wroc{\l}aw, Mateusz Lewandowski, Poland), Szymon Dudycz

arxiv:1811.08506 v1 · 2018-11-20 · cs.CC · 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{HQ6YTOZWSB2IXG3B5XYU7XG2ZV}

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	2026-05-18T00:00:12.340505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c3d89bb3690748b9b61edf14fdcdacd53993fd726ad171cda1d5b5777533f99

Aliases

arxiv: 1811.08506 · arxiv_version: 1811.08506v1 · doi: 10.48550/arxiv.1811.08506 · pith_short_12: HQ6YTOZWSB2I · pith_short_16: HQ6YTOZWSB2IXG3B · pith_short_8: HQ6YTOZW

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/HQ6YTOZWSB2IXG3B5XYU7XG2ZV \
  | 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: 3c3d89bb3690748b9b61edf14fdcdacd53993fd726ad171cda1d5b5777533f99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3830bfb101c8942425d8442234c50914c12172c2a2d3e93c09285073fcc649e1",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-11-20T22:04:59Z",
    "title_canon_sha256": "98643544af9e30cc32523fda65f9dfcfc5598838c179c234066277ebfa6bebb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.08506",
    "kind": "arxiv",
    "version": 1
  }
}