Pith Number

pith:ME62AZI7

pith:2014:ME62AZI7VRPZLS6HZ7WC3WGENZ

not attested not anchored not stored refs pending

Estimation of functionals of sparse covariance matrices

Jianqing Fan, Philippe Rigollet, Weichen Wang

arxiv:1408.5087 v2 · 2014-08-21 · math.ST · stat.ME · stat.TH

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ME62AZI7VRPZLS6HZ7WC3WGENZ}

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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	2026-05-18T01:26:50.531627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

613da0651fac5f95cbc7cfec2dd8c46e63e23543555435887a245db62448ab5c

Aliases

arxiv: 1408.5087 · arxiv_version: 1408.5087v2 · doi: 10.48550/arxiv.1408.5087 · pith_short_12: ME62AZI7VRPZ · pith_short_16: ME62AZI7VRPZLS6H · pith_short_8: ME62AZI7

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/ME62AZI7VRPZLS6HZ7WC3WGENZ \
  | 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: 613da0651fac5f95cbc7cfec2dd8c46e63e23543555435887a245db62448ab5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68fd51f38118c2196969df06e877e36099004d0b3243480a40407768da310dc9",
    "cross_cats_sorted": [
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2014-08-21T17:59:32Z",
    "title_canon_sha256": "ee31227405184526733f71f75da1dff883d9439a878e1f558c078585a7e28eb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5087",
    "kind": "arxiv",
    "version": 2
  }
}