Pith Number

pith:W6KXXJIP

pith:2014:W6KXXJIPH5BFDE2L2X6WTYYPEF

not attested not anchored not stored refs pending

On the theoretic and practical merits of the banding estimator for large covariance matrices

Florentina Bunea, Luo Xiao

arxiv:1402.0844 v1 · 2014-02-04 · math.ST · 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{W6KXXJIPH5BFDE2L2X6WTYYPEF}

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	2026-05-18T03:00:11.823554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7957ba50f3f4251934bd5fd69e30f21510c448bf5597c7c824c5d6cc70f15bd

Aliases

arxiv: 1402.0844 · arxiv_version: 1402.0844v1 · doi: 10.48550/arxiv.1402.0844 · pith_short_12: W6KXXJIPH5BF · pith_short_16: W6KXXJIPH5BFDE2L · pith_short_8: W6KXXJIP

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/W6KXXJIPH5BFDE2L2X6WTYYPEF \
  | 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: b7957ba50f3f4251934bd5fd69e30f21510c448bf5597c7c824c5d6cc70f15bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aee1e5a79c0b861e51885beeaa176de42c0c825254602149af5375c0f583a86e",
    "cross_cats_sorted": [
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2014-02-04T19:52:46Z",
    "title_canon_sha256": "789295999d58f0e2fc279437e4e5e4ca9ef3a96e52b8dc1102e7d7b199887613"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.0844",
    "kind": "arxiv",
    "version": 1
  }
}