Pith Number

pith:NU7SSBQB

pith:2022:NU7SSBQB4PMHXJN35FQWWHKKD7

not attested not anchored not stored refs pending

Data-Driven optimal shrinkage of singular values under high-dimensional noise with separable covariance structure with application

Hau-Tieng Wu, Pei-Chun Su

arxiv:2207.03466 v6 · 2022-07-07 · stat.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NU7SSBQB4PMHXJN35FQWWHKKD7}

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	2026-07-05T08:17:54.538712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d3f290601e3d87ba5bbe9616b1d4a1fd6855805574ff77e8e41997b08066ae3

Aliases

arxiv: 2207.03466 · arxiv_version: 2207.03466v6 · doi: 10.48550/arxiv.2207.03466 · pith_short_12: NU7SSBQB4PMH · pith_short_16: NU7SSBQB4PMHXJN3 · pith_short_8: NU7SSBQB

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/NU7SSBQB4PMHXJN35FQWWHKKD7 \
  | 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: 6d3f290601e3d87ba5bbe9616b1d4a1fd6855805574ff77e8e41997b08066ae3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9c591bd61a859081049ed478dd7ee3fd049b693b9e7b8e22ac531e94fa773a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2022-07-07T17:49:39Z",
    "title_canon_sha256": "8ff168f8d7ed140d528cbe14fa4b7b6522fb3d05494247f33dd183c4318cff9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.03466",
    "kind": "arxiv",
    "version": 6
  }
}