Pith Number

pith:JAE37QJ4

pith:2022:JAE37QJ4F26CR3TTCSENE5XQ4X

not attested not anchored not stored refs pending

R-NL: Covariance Matrix Estimation for Elliptical Distributions based on Nonlinear Shrinkage

Jeffrey N\"af, Michael Wolf, Simon Hediger

arxiv:2210.14854 v4 · 2022-10-26 · 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{JAE37QJ4F26CR3TTCSENE5XQ4X}

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	2026-07-05T06:15:17.275034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4809bfc13c2ebc28ee731488d276f0e5e0ec5814f3adfdcdf529bcf99fcaedcb

Aliases

arxiv: 2210.14854 · arxiv_version: 2210.14854v4 · doi: 10.48550/arxiv.2210.14854 · pith_short_12: JAE37QJ4F26C · pith_short_16: JAE37QJ4F26CR3TT · pith_short_8: JAE37QJ4

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/JAE37QJ4F26CR3TTCSENE5XQ4X \
  | 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: 4809bfc13c2ebc28ee731488d276f0e5e0ec5814f3adfdcdf529bcf99fcaedcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79e0a3a5b878178c450589acc32625bef0db1d0b0a3a4329fa218c093eff51bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2022-10-26T16:52:36Z",
    "title_canon_sha256": "544aeb84eb40b942df5f916d7b1bd872affb7fa5def59f94b4746bf4d6a71e4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.14854",
    "kind": "arxiv",
    "version": 4
  }
}