Pith Number

pith:YHPRCOXY

pith:2011:YHPRCOXYYGDP7FC2ME7L5LA3UC

not attested not anchored not stored refs pending

A Distributed Approximation Algorithm for the Metric Uncapacitated Facility Location Problem in the Congest Model

Barbara Kempkes, Bastian Degener, Patrick Briest, Peter Kling, Peter Pietrzyk

arxiv:1105.1248 v1 · 2011-05-06 · 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{YHPRCOXYYGDP7FC2ME7L5LA3UC}

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	2026-05-18T04:22:40.810381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1df113af8c186ff945a613ebeac1ba0a955ffaf42580deb00752ec28fde8cd2

Aliases

arxiv: 1105.1248 · arxiv_version: 1105.1248v1 · doi: 10.48550/arxiv.1105.1248 · pith_short_12: YHPRCOXYYGDP · pith_short_16: YHPRCOXYYGDP7FC2 · pith_short_8: YHPRCOXY

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/YHPRCOXYYGDP7FC2ME7L5LA3UC \
  | 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: c1df113af8c186ff945a613ebeac1ba0a955ffaf42580deb00752ec28fde8cd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "846d64a9e8c9e3f879a3e0438444714a5c0b7b47f7bf31a7e7014f79982729ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2011-05-06T09:36:03Z",
    "title_canon_sha256": "eb84357da2a8e93d6ff2f5749dd362380e6f170fb1fe0fd15301e8192c585c87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.1248",
    "kind": "arxiv",
    "version": 1
  }
}