Pith Number

pith:2D76NKWD

pith:2009:2D76NKWDQNJQBQRE7OB2W7NWIT

not attested not anchored not stored refs pending

SPADES and mixture models

Adrian Barbu, Alexandre B. Tsybakov, Florentina Bunea, Marten H. Wegkamp

arxiv:0901.2044 v2 · 2009-01-14 · math.ST · stat.ML · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2D76NKWDQNJQBQRE7OB2W7NWIT}

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	2026-05-18T04:38:59.390355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0ffe6aac3835300c224fb83ab7db644c7ff8175346f0d882f7063ab4638be77

Aliases

arxiv: 0901.2044 · arxiv_version: 0901.2044v2 · doi: 10.48550/arxiv.0901.2044 · pith_short_12: 2D76NKWDQNJQ · pith_short_16: 2D76NKWDQNJQBQRE · pith_short_8: 2D76NKWD

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/2D76NKWDQNJQBQRE7OB2W7NWIT \
  | 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: d0ffe6aac3835300c224fb83ab7db644c7ff8175346f0d882f7063ab4638be77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8656f708ab5669ccc4e7757afd3193c74b8333f6474381e2f80f54aa5ee6a936",
    "cross_cats_sorted": [
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2009-01-14T15:34:13Z",
    "title_canon_sha256": "65f845d01b4b7e1967664889350425f3d6f13599ceaf5ebb8bd303cd25cd2bc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2044",
    "kind": "arxiv",
    "version": 2
  }
}