Pith Number

pith:6NIKTFKN

pith:2015:6NIKTFKNQ4BB4RWPUS7TRTYLBN

not attested not anchored not stored refs pending

Improved Second Order Estimation in the Singular Multivariate Normal Model

Didier Ch\'etelat, Martin T. Wells

arxiv:1509.02451 v1 · 2015-09-08 · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6NIKTFKNQ4BB4RWPUS7TRTYLBN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:33:40.859543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f350a9954d87021e46cfa4bf38cf0b0b76b86c7e8f453f1df089167e9f02ca07

Aliases

arxiv: 1509.02451 · arxiv_version: 1509.02451v1 · doi: 10.48550/arxiv.1509.02451 · pith_short_12: 6NIKTFKNQ4BB · pith_short_16: 6NIKTFKNQ4BB4RWP · pith_short_8: 6NIKTFKN

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/6NIKTFKNQ4BB4RWPUS7TRTYLBN \
  | 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: f350a9954d87021e46cfa4bf38cf0b0b76b86c7e8f453f1df089167e9f02ca07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a651ef3b3967dbeac20f454bbe274cfc9d306dc2180a7eefb0ceb09eba13849c",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2015-09-08T17:14:54Z",
    "title_canon_sha256": "dd669a85033a5629fb7815f430eb2f16a2760f81626929701ca978c92f5e90dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02451",
    "kind": "arxiv",
    "version": 1
  }
}