Pith Number

pith:SQGHEIYA

pith:2019:SQGHEIYADBLU2AA6Z5YFXT7RHH

not attested not anchored not stored refs pending

Optimal estimation of functionals of high-dimensional mean and covariance matrix

Haolei Weng, Jianqing Fan, Yifeng Zhou

arxiv:1908.07460 v2 · 2019-08-20 · 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{SQGHEIYADBLU2AA6Z5YFXT7RHH}

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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	2026-07-05T02:14:27.411607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

940c72230018574d001ecf705bcff139f39765b2da86f225b7753449b3ae94d0

Aliases

arxiv: 1908.07460 · arxiv_version: 1908.07460v2 · doi: 10.48550/arxiv.1908.07460 · pith_short_12: SQGHEIYADBLU · pith_short_16: SQGHEIYADBLU2AA6 · pith_short_8: SQGHEIYA

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/SQGHEIYADBLU2AA6Z5YFXT7RHH \
  | 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: 940c72230018574d001ecf705bcff139f39765b2da86f225b7753449b3ae94d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9c77689edfbb67206878d9f4cbce567cc64fa1dafb9c1b8909c13a3cdd63d73",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2019-08-20T16:00:57Z",
    "title_canon_sha256": "7104a778ac68ef6e4756d0b70b4eb9943c27d0bf3f530aa4fc3922de8f2ef613"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07460",
    "kind": "arxiv",
    "version": 2
  }
}