Pith Number

pith:HSHZGWH4

pith:2013:HSHZGWH4KRCEDL2FRNITP2Y744

not attested not anchored not stored refs pending

Tuning Parameter Selection in Regularized Estimations of Large Covariance Matrices

Binhuan Wang, Yang Feng, Yixin Fang

arxiv:1308.3416 v1 · 2013-08-15 · stat.ME · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSHZGWH4KRCEDL2FRNITP2Y744}

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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	2026-05-18T03:15:54.666884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c8f9358fc544441af458b5137eb1fe7344ae00e41d874d9cb5c459cdea6791c

Aliases

arxiv: 1308.3416 · arxiv_version: 1308.3416v1 · doi: 10.48550/arxiv.1308.3416 · pith_short_12: HSHZGWH4KRCE · pith_short_16: HSHZGWH4KRCEDL2F · pith_short_8: HSHZGWH4

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/HSHZGWH4KRCEDL2FRNITP2Y744 \
  | 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: 3c8f9358fc544441af458b5137eb1fe7344ae00e41d874d9cb5c459cdea6791c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a13ad5715d5e190881e8a7df2ab4157479e3ac39aa366f1b55cde14614ed04a",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2013-08-15T14:38:12Z",
    "title_canon_sha256": "5f8256aa0021694247851bac77e73946ad5e7d4cfc7399489a5967c5dc3eaec4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3416",
    "kind": "arxiv",
    "version": 1
  }
}