Pith Number

pith:4XBECCZP

pith:2014:4XBECCZP3VNV635N2A4E2NMXJR

not attested not anchored not stored refs pending

Ridge Estimation of Inverse Covariance Matrices from High-Dimensional Data

Carel F.W. Peeters, Wessel N. van Wieringen

arxiv:1403.0904 v3 · 2014-03-04 · 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{4XBECCZP3VNV635N2A4E2NMXJR}

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	2026-05-18T01:12:23.036393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5c2410b2fdd5b5f6fadd0384d35974c4526ba0c2a5ddd8cfa5d37a71b4af289

Aliases

arxiv: 1403.0904 · arxiv_version: 1403.0904v3 · doi: 10.48550/arxiv.1403.0904 · pith_short_12: 4XBECCZP3VNV · pith_short_16: 4XBECCZP3VNV635N · pith_short_8: 4XBECCZP

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/4XBECCZP3VNV635N2A4E2NMXJR \
  | 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: e5c2410b2fdd5b5f6fadd0384d35974c4526ba0c2a5ddd8cfa5d37a71b4af289

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4efb3352bbdeed90b9aa41aeaf7494aa0105f6b040fcb69ae5193f5356fda96",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2014-03-04T19:09:14Z",
    "title_canon_sha256": "b1318641199878c32d32ed6999b21cfb4c4821916828d3a81803203aa7736221"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.0904",
    "kind": "arxiv",
    "version": 3
  }
}