Pith Number

pith:NLWI3OZR

pith:2018:NLWI3OZRAPXG2NZP4XIKS4AHOV

not attested not anchored not stored refs pending

Bayesian Estimation of Sparse Spiked Covariance Matrices in High Dimensions

Carey E. Priebe, Fangzheng Xie, Joshua Cape, Yanxun Xu

arxiv:1808.07433 v2 · 2018-08-22 · stat.ME · 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{NLWI3OZRAPXG2NZP4XIKS4AHOV}

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	2026-05-17T23:55:07.466517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6aec8dbb3103ee6d372fe5d0a9700775438c25a291486cf339a53de461aa97ec

Aliases

arxiv: 1808.07433 · arxiv_version: 1808.07433v2 · doi: 10.48550/arxiv.1808.07433 · pith_short_12: NLWI3OZRAPXG · pith_short_16: NLWI3OZRAPXG2NZP · pith_short_8: NLWI3OZR

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/NLWI3OZRAPXG2NZP4XIKS4AHOV \
  | 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: 6aec8dbb3103ee6d372fe5d0a9700775438c25a291486cf339a53de461aa97ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11d284deaa7b0baccf98de60153dffaafd6a071f8ea823d454832b86cbaf714d",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2018-08-22T16:42:04Z",
    "title_canon_sha256": "0bc88975619014c805bd2813df693a7e4f5d995a9c903d8e8e25828a87716c65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07433",
    "kind": "arxiv",
    "version": 2
  }
}