Pith Number

pith:SJXYZCZN

pith:2015:SJXYZCZNRMNJWVGMBT7JSWC3D2

not attested not anchored not stored refs pending

Asymptotic optimality of sparse linear discriminant analysis with arbitrary number of classes

Ruiyan Luo, Xin Qi

arxiv:1508.01131 v1 · 2015-08-05 · math.ST · 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{SJXYZCZNRMNJWVGMBT7JSWC3D2}

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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	2026-05-18T01:35:43.981951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

926f8c8b2d8b1a9b54cc0cfe99585b1ebd474bcd2e19dc5f8138e7489fe43131

Aliases

arxiv: 1508.01131 · arxiv_version: 1508.01131v1 · doi: 10.48550/arxiv.1508.01131 · pith_short_12: SJXYZCZNRMNJ · pith_short_16: SJXYZCZNRMNJWVGM · pith_short_8: SJXYZCZN

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/SJXYZCZNRMNJWVGMBT7JSWC3D2 \
  | 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: 926f8c8b2d8b1a9b54cc0cfe99585b1ebd474bcd2e19dc5f8138e7489fe43131

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "154c03fa316fa62670c1ac849fdbd9e985a363d5e24c3ad36e4b052537722d0b",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2015-08-05T17:04:29Z",
    "title_canon_sha256": "e9e74e353ea6e55183b616f5b287ec7c97f8a8565a96850360dbe984e6378990"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01131",
    "kind": "arxiv",
    "version": 1
  }
}