Pith Number

pith:2VQ5VAQS

pith:2015:2VQ5VAQSPDJTO4CXX7DKEDIBCR

not attested not anchored not stored refs pending

On estimation of the diagonal elements of a sparse precision matrix

Arnak S. Dalalyan, Samuel Balmand

arxiv:1504.04696 v4 · 2015-04-18 · math.ST · stat.CO · stat.ME · 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{2VQ5VAQSPDJTO4CXX7DKEDIBCR}

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	2026-05-18T00:39:18.532750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d561da821278d3377057bfc6a20d0114767e205257a69bdb11f48308a1131b59

Aliases

arxiv: 1504.04696 · arxiv_version: 1504.04696v4 · doi: 10.48550/arxiv.1504.04696 · pith_short_12: 2VQ5VAQSPDJT · pith_short_16: 2VQ5VAQSPDJTO4CX · pith_short_8: 2VQ5VAQS

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/2VQ5VAQSPDJTO4CXX7DKEDIBCR \
  | 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: d561da821278d3377057bfc6a20d0114767e205257a69bdb11f48308a1131b59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5dc6b11ce63d50ebc26e806fb4a0ea6b8288e05c376344b401a1db9a06e53ce",
    "cross_cats_sorted": [
      "stat.CO",
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2015-04-18T08:56:38Z",
    "title_canon_sha256": "c18ca4e6b9e4109d0c9896e2bb01aa1fe4563e1b60c378e8d98414a4e46e8684"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04696",
    "kind": "arxiv",
    "version": 4
  }
}