Pith Number

pith:7YEP6GOD

pith:2015:7YEP6GODSHN3PXLZFEFDHGUIJC

not attested not anchored not stored refs pending

An Extreme-Value Approach for Testing the Equality of Large U-Statistic Based Correlation Matrices

Cheng Zhou, Fang Han, Han Liu, Xinsheng Zhang

arxiv:1502.03211 v2 · 2015-02-11 · math.ST · stat.ML · 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{7YEP6GODSHN3PXLZFEFDHGUIJC}

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	2026-05-18T00:19:48.026798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe08ff19c391dbb7dd79290a339a88488744dbf5f92c94c09f192c5cb1df9b64

Aliases

arxiv: 1502.03211 · arxiv_version: 1502.03211v2 · doi: 10.48550/arxiv.1502.03211 · pith_short_12: 7YEP6GODSHN3 · pith_short_16: 7YEP6GODSHN3PXLZ · pith_short_8: 7YEP6GOD

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/7YEP6GODSHN3PXLZFEFDHGUIJC \
  | 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: fe08ff19c391dbb7dd79290a339a88488744dbf5f92c94c09f192c5cb1df9b64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e44fb40a457c1dc53f5975ccdbc2982cbe9b35dbd06aaa989b7a04b8728a0a16",
    "cross_cats_sorted": [
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2015-02-11T07:54:25Z",
    "title_canon_sha256": "2dd2b3976cfcbebbd0120394f18048f912a553345ba619f2aa348815e1a3983d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.03211",
    "kind": "arxiv",
    "version": 2
  }
}