Pith Number

pith:RPCW4O2T

pith:2015:RPCW4O2T7X5UQGA7ITMGXXXRC5

not attested not anchored not stored refs pending

Regularized LRT for Large Scale Covariance Matrices: One Sample Problem

Chi Tim Ng, Johan Lim, Young-Geun Choi

arxiv:1502.00384 v3 · 2015-02-02 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RPCW4O2T7X5UQGA7ITMGXXXRC5}

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	2026-05-17T23:48:41.192063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bc56e3b53fdfb48181f44d86bdef11772bef2a41d6206e3f021db4b26fd6212

Aliases

arxiv: 1502.00384 · arxiv_version: 1502.00384v3 · doi: 10.48550/arxiv.1502.00384 · pith_short_12: RPCW4O2T7X5U · pith_short_16: RPCW4O2T7X5UQGA7 · pith_short_8: RPCW4O2T

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/RPCW4O2T7X5UQGA7ITMGXXXRC5 \
  | 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: 8bc56e3b53fdfb48181f44d86bdef11772bef2a41d6206e3f021db4b26fd6212

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0165018bee337446f674eaa605338323cfdd125de60ebf8b6c387ebd5887f6b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2015-02-02T07:37:50Z",
    "title_canon_sha256": "8fc794e6dcb8d020fcb6d202bfc3b64523a5d8d94ba483e90b09575c0a07c87a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00384",
    "kind": "arxiv",
    "version": 3
  }
}