Pith Number

pith:UKN7CHWI

pith:2018:UKN7CHWIS3F5PLXUTKJZJMD54T

not attested not anchored not stored refs pending

Optimal Distributed Weighted Set Cover Approximation

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

arxiv:1808.05809 v1 · 2018-08-17 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UKN7CHWIS3F5PLXUTKJZJMD54T}

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	2026-05-18T00:07:52.046449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a29bf11ec896cbd7aef49a9394b07de4e256e29e8b5b20a5208674129930d956

Aliases

arxiv: 1808.05809 · arxiv_version: 1808.05809v1 · doi: 10.48550/arxiv.1808.05809 · pith_short_12: UKN7CHWIS3F5 · pith_short_16: UKN7CHWIS3F5PLXU · pith_short_8: UKN7CHWI

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/UKN7CHWIS3F5PLXUTKJZJMD54T \
  | 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: a29bf11ec896cbd7aef49a9394b07de4e256e29e8b5b20a5208674129930d956

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61176368ad878368ba016f647af9ba45e777d01137d69a15d12986e30ceb435c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2018-08-17T09:50:30Z",
    "title_canon_sha256": "102d1e6521a947691dd6a828c3cd82958ac07fddd3a4f20f1ef6c0f92e19507a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05809",
    "kind": "arxiv",
    "version": 1
  }
}