Pith Number

pith:OENT7JQK

pith:2018:OENT7JQKQAN64A5RL4PX52466U

not attested not anchored not stored refs pending

On characterizations of the covariance matrix

Joni Virta

arxiv:1810.01147 v1 · 2018-10-02 · math.ST · 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{OENT7JQKQAN64A5RL4PX52466U}

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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	2026-05-18T00:04:18.658255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

711b3fa60a801bee03b15f1f7eeb9ef50506f7ffbb85b31a8fa686a73ee92f42

Aliases

arxiv: 1810.01147 · arxiv_version: 1810.01147v1 · doi: 10.48550/arxiv.1810.01147 · pith_short_12: OENT7JQKQAN6 · pith_short_16: OENT7JQKQAN64A5R · pith_short_8: OENT7JQK

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/OENT7JQKQAN64A5RL4PX52466U \
  | 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: 711b3fa60a801bee03b15f1f7eeb9ef50506f7ffbb85b31a8fa686a73ee92f42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f11ae2fc3380cf5b4c3fb259ed9987546467feb7b1e2565f67710d9a41e5a89",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2018-10-02T09:59:49Z",
    "title_canon_sha256": "10df7c3ef820de8c029f3db160ef9c1fa3997568187880e4d928d9a27fe68cac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.01147",
    "kind": "arxiv",
    "version": 1
  }
}