Pith Number

pith:CR7243US

pith:2015:CR7243USFXJHWMGHUNYE6WZRCY

not attested not anchored not stored refs pending

Estimation of a high-dimensional covariance matrix with the Stein loss

Hisayuki Tsukuma

arxiv:1506.00748 v1 · 2015-06-02 · 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{CR7243USFXJHWMGHUNYE6WZRCY}

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	2026-05-18T01:59:51.325768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

147fae6e922dd27b30c7a3704f5b3116330db5f472a0109af8c09c33e81e5cc9

Aliases

arxiv: 1506.00748 · arxiv_version: 1506.00748v1 · doi: 10.48550/arxiv.1506.00748 · pith_short_12: CR7243USFXJH · pith_short_16: CR7243USFXJHWMGH · pith_short_8: CR7243US

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/CR7243USFXJHWMGHUNYE6WZRCY \
  | 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: 147fae6e922dd27b30c7a3704f5b3116330db5f472a0109af8c09c33e81e5cc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fa27757da1c4608a0d4e66d91ae89e70769800d357d207f37ced6d51fa57439",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2015-06-02T04:53:38Z",
    "title_canon_sha256": "4c187786aa5759b7cc0bf357d47807dc8568f281a407ceb2cb61130dabc82835"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.00748",
    "kind": "arxiv",
    "version": 1
  }
}