Pith Number

pith:FKMLP3AO

pith:2018:FKMLP3AOF5MZCJX7GQEFH6TXRA

not attested not anchored not stored refs pending

Turning Big data into tiny data: Constant-size coresets for k-means, PCA and projective clustering

Christian Sohler, Dan Feldman, Melanie Schmidt

arxiv:1807.04518 v1 · 2018-07-12 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FKMLP3AOF5MZCJX7GQEFH6TXRA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:10:53.219390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a98b7ec0e2f599126ff340853fa77883c6ab538c13b64f96fa62189a1c48075

Aliases

arxiv: 1807.04518 · arxiv_version: 1807.04518v1 · doi: 10.48550/arxiv.1807.04518 · pith_short_12: FKMLP3AOF5MZ · pith_short_16: FKMLP3AOF5MZCJX7 · pith_short_8: FKMLP3AO

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/FKMLP3AOF5MZCJX7GQEFH6TXRA \
  | 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: 2a98b7ec0e2f599126ff340853fa77883c6ab538c13b64f96fa62189a1c48075

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17534c209150c20ad100e4fa44a96b000a6776672620e466225eaeac0341bb62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-07-12T10:25:12Z",
    "title_canon_sha256": "a90087c3f9f8d304d7eca6992cc3e220cdd59328a336c6bc18cd819ea8598a0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04518",
    "kind": "arxiv",
    "version": 1
  }
}