Pith Number

pith:RRTHMRLU

pith:2025:RRTHMRLU7AVOWRZCNTIDYHRZC4

not attested not anchored not stored refs pending

Robust Sparse Precision Matrix Estimation and its Application

Long Feng, Zhengke Lu

arxiv:2503.03575 v1 · 2025-03-05 · 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{RRTHMRLU7AVOWRZCNTIDYHRZC4}

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.

Cited by

1 paper in Pith

High-Dimensional Tests for Elliptical Models via Radial--Directional Dependence

Receipt and verification

First computed	2026-07-05T10:24:56.552250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c66764574f82aeb47226cd03c1e391737ecea44dc00446c7e8a8bc233b9637e

Aliases

arxiv: 2503.03575 · arxiv_version: 2503.03575v1 · doi: 10.48550/arxiv.2503.03575 · pith_short_12: RRTHMRLU7AVO · pith_short_16: RRTHMRLU7AVOWRZC · pith_short_8: RRTHMRLU

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/RRTHMRLU7AVOWRZCNTIDYHRZC4 \
  | 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: 8c66764574f82aeb47226cd03c1e391737ecea44dc00446c7e8a8bc233b9637e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6dc8a8a7dadd305f3bc3200d9b5849ab4398af2feb8ff065dc1ba9e2a47d4575",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2025-03-05T15:01:57Z",
    "title_canon_sha256": "3f9b807e844939a794012ec40d2975e4edc177d0d4c16978de36703ff8ca2f8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.03575",
    "kind": "arxiv",
    "version": 1
  }
}