Pith Number

pith:2HY7QPLI

pith:2018:2HY7QPLI6HFEYWDKITGTRZWVOX

not attested not anchored not stored refs pending

Constant factor FPT approximation for capacitated k-median

Jan Marcinkowski, Jaros{\l}aw Byrka, Marek Adamczyk, Micha{\l} W{\l}odarczyk, Syed M. Meesum

arxiv:1809.05791 v1 · 2018-09-16 · 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{2HY7QPLI6HFEYWDKITGTRZWVOX}

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	2026-05-18T00:05:36.494448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1f1f83d68f1ca4c586a44cd38e6d575c570c22b8855efcf53b1d2b92bc28d39

Aliases

arxiv: 1809.05791 · arxiv_version: 1809.05791v1 · doi: 10.48550/arxiv.1809.05791 · pith_short_12: 2HY7QPLI6HFE · pith_short_16: 2HY7QPLI6HFEYWDK · pith_short_8: 2HY7QPLI

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/2HY7QPLI6HFEYWDKITGTRZWVOX \
  | 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: d1f1f83d68f1ca4c586a44cd38e6d575c570c22b8855efcf53b1d2b92bc28d39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa947eadd9de16d80c2673ddb5d3bfaec087cca832ecf9a000408dc938246f54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-09-16T01:42:13Z",
    "title_canon_sha256": "a12d1c8470515e7c91c1ca2f0456a596a9caa6ee0f453779c9d2cea19327f120"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05791",
    "kind": "arxiv",
    "version": 1
  }
}