Pith Number

pith:PDY5HWN7

pith:2009:PDY5HWN7SFVNQ65TE4MIQOA2U2

not attested not anchored not stored refs pending

Covariance estimation in decomposable Gaussian graphical models

Alfred O. Hero III, Ami Wiesel, Yonina C. Eldar

arxiv:0903.1283 v1 · 2009-03-06 · 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{PDY5HWN7SFVNQ65TE4MIQOA2U2}

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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	2026-05-18T01:29:12.345074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78f1d3d9bf916ad87bb3271888381aa687d48252f136e8b282c89ab29483e4df

Aliases

arxiv: 0903.1283 · arxiv_version: 0903.1283v1 · doi: 10.48550/arxiv.0903.1283 · pith_short_12: PDY5HWN7SFVN · pith_short_16: PDY5HWN7SFVNQ65T · pith_short_8: PDY5HWN7

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/PDY5HWN7SFVNQ65TE4MIQOA2U2 \
  | 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: 78f1d3d9bf916ad87bb3271888381aa687d48252f136e8b282c89ab29483e4df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d13887f663ddb30df47b1eb53ef5c0547f2c774c77d832ba61c01a2bdde41dcd",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2009-03-06T19:51:27Z",
    "title_canon_sha256": "49746e00d7723bf4c5bddf22927fb650e501aa1f85ce329e8b250f457ce64712"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1283",
    "kind": "arxiv",
    "version": 1
  }
}