Pith Number

pith:SQCU3CMV

pith:2016:SQCU3CMVQ3RFIY2DKT36ALIGIU

not attested not anchored not stored refs pending

Fixed support positive-definite modification of covariance matrix estimators via linear shrinkage

Anindya Roy, Johan Lim, Junyong Park, Young-Geun Choi

arxiv:1606.03814 v2 · 2016-06-13 · 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{SQCU3CMVQ3RFIY2DKT36ALIGIU}

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	2026-05-17T23:48:41.092775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94054d899586e254634354f7e02d06452606e6de3266e7e1d2c26004093d6f8d

Aliases

arxiv: 1606.03814 · arxiv_version: 1606.03814v2 · doi: 10.48550/arxiv.1606.03814 · pith_short_12: SQCU3CMVQ3RF · pith_short_16: SQCU3CMVQ3RFIY2D · pith_short_8: SQCU3CMV

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/SQCU3CMVQ3RFIY2DKT36ALIGIU \
  | 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: 94054d899586e254634354f7e02d06452606e6de3266e7e1d2c26004093d6f8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd236161b3a8387394fab5cd043a9b66ddf27b238cb5c12d8eedb7669917149c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2016-06-13T05:21:18Z",
    "title_canon_sha256": "3d13a32c33b45c6b6182c4f5b70cefebeda6537b64c027be74d5060532da7c1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.03814",
    "kind": "arxiv",
    "version": 2
  }
}