Pith Number

pith:EHX4NZJX

pith:2016:EHX4NZJXZGENU6HLJZ4MMNARMV

not attested not anchored not stored refs pending

Local Search Yields a PTAS for k-Means in Doubling Metrics

Mohammad R. Salavatipour, Mohsen Rezapour, Zachary Friggstad

arxiv:1603.08976 v2 · 2016-03-29 · cs.DS · cs.AI · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EHX4NZJXZGENU6HLJZ4MMNARMV}

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	2026-05-18T00:53:08.400119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21efc6e537c988da78eb4e78c63411657786b750d472ae803c734eee4909bf0e

Aliases

arxiv: 1603.08976 · arxiv_version: 1603.08976v2 · doi: 10.48550/arxiv.1603.08976 · pith_short_12: EHX4NZJXZGEN · pith_short_16: EHX4NZJXZGENU6HL · pith_short_8: EHX4NZJX

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/EHX4NZJXZGENU6HLJZ4MMNARMV \
  | 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: 21efc6e537c988da78eb4e78c63411657786b750d472ae803c734eee4909bf0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "304998a2466d86653392ecd9943a48f99bc114f18edf63ff39e2b84be0eef208",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-03-29T21:41:55Z",
    "title_canon_sha256": "6e8322f121ed3d67e5a437878da299f220fdba9e093c5a43211f8abd271397de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.08976",
    "kind": "arxiv",
    "version": 2
  }
}