Pith Number

pith:YN4ZTYNX

pith:2018:YN4ZTYNXGMQ332YYBOSNPNXAWM

not attested not anchored not stored refs pending

A Deterministic Distributed $2$-Approximation for Weighted Vertex Cover in $O(\log n\log\Delta / \log^2\log\Delta)$ Rounds

Gregory Schwartzman, Guy Even, Ken-ichi Kawarabayashi, Ran Ben-Basat

arxiv:1804.01308 v3 · 2018-04-04 · cs.DC · 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{YN4ZTYNXGMQ332YYBOSNPNXAWM}

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	2026-05-18T00:15:09.579814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c37999e1b73321bdeb180ba4d7b6e0b303b63da6a02d76055c41b66075b8f302

Aliases

arxiv: 1804.01308 · arxiv_version: 1804.01308v3 · doi: 10.48550/arxiv.1804.01308 · pith_short_12: YN4ZTYNXGMQ3 · pith_short_16: YN4ZTYNXGMQ332YY · pith_short_8: YN4ZTYNX

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/YN4ZTYNXGMQ332YYBOSNPNXAWM \
  | 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: c37999e1b73321bdeb180ba4d7b6e0b303b63da6a02d76055c41b66075b8f302

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64f079c55610486b1fefcd12b02137e598b827b2abcaea9094a9aac4ce16b6c6",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2018-04-04T09:01:44Z",
    "title_canon_sha256": "debc6c2325d9c8833da13b76c824881d7c615dc93abe1122daf2e247f7f905d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01308",
    "kind": "arxiv",
    "version": 3
  }
}