Pith Number

pith:QZLQMSKV

pith:2010:QZLQMSKVTYDVGN7GM2XECAGRK6

not attested not anchored not stored refs pending

Von Neumann Entropy Penalization and Low Rank Matrix Estimation

Vladimir Koltchinskii

arxiv:1009.2439 v1 · 2010-09-13 · 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{QZLQMSKVTYDVGN7GM2XECAGRK6}

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	2026-05-18T04:41:04.219627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86570649559e075337e666ae4100d157ace05bdc770945e0266ca275e324d939

Aliases

arxiv: 1009.2439 · arxiv_version: 1009.2439v1 · doi: 10.48550/arxiv.1009.2439 · pith_short_12: QZLQMSKVTYDV · pith_short_16: QZLQMSKVTYDVGN7G · pith_short_8: QZLQMSKV

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/QZLQMSKVTYDVGN7GM2XECAGRK6 \
  | 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: 86570649559e075337e666ae4100d157ace05bdc770945e0266ca275e324d939

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "284e35448d331643e87a95eeb23928b18c3ae79cc97879ec121f243344332adb",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2010-09-13T16:14:30Z",
    "title_canon_sha256": "205dd5dc0eb97f4c04b1a4ddb97474e4779b14c3d411e71f310fd15d91d73194"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2439",
    "kind": "arxiv",
    "version": 1
  }
}