Pith Number

pith:W754BME2

pith:2026:W754BME2OLZRXEL7G6LTX6RWX2

not attested not anchored not stored refs pending

On the Curse of Dimensionality in Private Sparse Covariance Estimation and PCA

Kevin Tian, Purnamrita Sarkar, Shourya Pandey, Syamantak Kumar

arxiv:2606.21951 v1 · 2026-06-20 · cs.LG · cs.CR · cs.DS · 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{W754BME2OLZRXEL7G6LTX6RWX2}

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	2026-06-23T02:13:04.056144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7fbc0b09a72f31b917f37973bfa36bebe2ad1cc661526300e8dc051269ee11c

Aliases

arxiv: 2606.21951 · arxiv_version: 2606.21951v1 · doi: 10.48550/arxiv.2606.21951 · pith_short_12: W754BME2OLZR · pith_short_16: W754BME2OLZRXEL7 · pith_short_8: W754BME2

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/W754BME2OLZRXEL7G6LTX6RWX2 \
  | 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: b7fbc0b09a72f31b917f37973bfa36bebe2ad1cc661526300e8dc051269ee11c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0caebbd5f1a4cd782e874852265c6057d114f93bd16aef0eb85b74b359b301a1",
    "cross_cats_sorted": [
      "cs.CR",
      "cs.DS",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-06-20T08:38:51Z",
    "title_canon_sha256": "6c2d620501a99048e4f8e15707558c6715ef9b0f3f69c6b28408260f465d7f2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21951",
    "kind": "arxiv",
    "version": 1
  }
}