Pith Number

pith:SCKUX4N2

pith:2022:SCKUX4N2EUJ3TLF3K4YZ4RZWWB

not attested not anchored not stored refs pending

On confidence intervals for precision matrices and the eigendecomposition of covariance matrices

Aleksei Tiulpin, Matthew B. Blaschko, Teodora Popordanoska, Wacha Bounliphone

arxiv:2208.11977 v1 · 2022-08-25 · math.ST · cs.LG · 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{SCKUX4N2EUJ3TLF3K4YZ4RZWWB}

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	2026-07-05T04:51:28.310350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90954bf1ba2513b9acbb57319e4736b0511b9607e8847c0cd5526c9d272c4479

Aliases

arxiv: 2208.11977 · arxiv_version: 2208.11977v1 · doi: 10.48550/arxiv.2208.11977 · pith_short_12: SCKUX4N2EUJ3 · pith_short_16: SCKUX4N2EUJ3TLF3 · pith_short_8: SCKUX4N2

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/SCKUX4N2EUJ3TLF3K4YZ4RZWWB \
  | 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: 90954bf1ba2513b9acbb57319e4736b0511b9607e8847c0cd5526c9d272c4479

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9219ff8c7b046170fb5893b403fb777bdb792734e6aeaccb0d23fbbde79c2fce",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2022-08-25T10:12:53Z",
    "title_canon_sha256": "ff11dacfe15ea122f374ba54014c780cba58232d66233bb51fae6386a917e780"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.11977",
    "kind": "arxiv",
    "version": 1
  }
}