Pith Number

pith:7FZNM3SG

pith:2026:7FZNM3SGGSQI43THOITQHX2RTL

not attested not anchored not stored refs pending

Information-Theoretic Bounds for Sparse Covariance Estimation in the Vertical-Split Distributed Model

Guangyue Han, Jing Yee Tan

arxiv:2606.07124 v1 · 2026-06-05 · cs.IT · math.IT · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7FZNM3SGGSQI43THOITQHX2RTL}

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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	2026-06-08T01:04:47.671180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f972d66e4634a08e6e67722703df519adbbb84c40d7825e61d3bff9e712e1fd9

Aliases

arxiv: 2606.07124 · arxiv_version: 2606.07124v1 · doi: 10.48550/arxiv.2606.07124 · pith_short_12: 7FZNM3SGGSQI · pith_short_16: 7FZNM3SGGSQI43TH · pith_short_8: 7FZNM3SG

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/7FZNM3SGGSQI43THOITQHX2RTL \
  | 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: f972d66e4634a08e6e67722703df519adbbb84c40d7825e61d3bff9e712e1fd9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07e626a4e5715b512f5e6b354f36e0d6c662f971e515f24d788f8c239825074a",
    "cross_cats_sorted": [
      "math.IT",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2026-06-05T10:25:12Z",
    "title_canon_sha256": "2901548a3f68e113fe1084c4f43de164148a981c4d4748d1f67f31a35ecd1897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.07124",
    "kind": "arxiv",
    "version": 1
  }
}