Pith Number

pith:W5ZZBKZP

pith:2016:W5ZZBKZP3CZXMH7L6BGCBWUDAK

not attested not anchored not stored refs pending

A Sub-Quadratic Exact Medoid Algorithm

Fran\c{c}ois Fleuret, James Newling

arxiv:1605.06950 v4 · 2016-05-23 · stat.ML · cs.DS · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5ZZBKZP3CZXMH7L6BGCBWUDAK}

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	2026-05-18T00:46:26.456677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b77390ab2fd8b3761febf04c20da8302b9cb6e2f9db22b22a1f589fb6b1a5f53

Aliases

arxiv: 1605.06950 · arxiv_version: 1605.06950v4 · doi: 10.48550/arxiv.1605.06950 · pith_short_12: W5ZZBKZP3CZX · pith_short_16: W5ZZBKZP3CZXMH7L · pith_short_8: W5ZZBKZP

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/W5ZZBKZP3CZXMH7L6BGCBWUDAK \
  | 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: b77390ab2fd8b3761febf04c20da8302b9cb6e2f9db22b22a1f589fb6b1a5f53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4fca23b385107d96dfd8faa84ac07adb1f33b162dc3058918b9059dac783843",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2016-05-23T09:24:59Z",
    "title_canon_sha256": "20cd0b8630e81dc316c3212208e1ccee5f5fdadb027a2d502888e92909d535ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.06950",
    "kind": "arxiv",
    "version": 4
  }
}