Pith Number

pith:IACOCY7K

pith:2018:IACOCY7KXUTC6N6FMLC76BFO3B

not attested not anchored not stored refs pending

Random matrix-improved estimation of covariance matrix distances

Eric Moisan, Malik Tiomoko, Romain Couillet, Steeve Zozor

arxiv:1810.04534 v1 · 2018-10-10 · math.PR · cs.LG · 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{IACOCY7KXUTC6N6FMLC76BFO3B}

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	2026-05-18T00:03:39.823989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4004e163eabd262f37c562c5ff04aed8790902c7167fb7c4058ad2e4096c3adb

Aliases

arxiv: 1810.04534 · arxiv_version: 1810.04534v1 · doi: 10.48550/arxiv.1810.04534 · pith_short_12: IACOCY7KXUTC · pith_short_16: IACOCY7KXUTC6N6F · pith_short_8: IACOCY7K

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/IACOCY7KXUTC6N6FMLC76BFO3B \
  | 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: 4004e163eabd262f37c562c5ff04aed8790902c7167fb7c4058ad2e4096c3adb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee02bbdcb2ac4d92f904b86f10a1e70537e5d945adb38f2c4e8e49fa3cee839b",
    "cross_cats_sorted": [
      "cs.LG",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2018-10-10T13:59:43Z",
    "title_canon_sha256": "6f7a1e949dec2ca5ff2298c0f1eedd396cfabc348cc2e6985942664b4dc5680f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.04534",
    "kind": "arxiv",
    "version": 1
  }
}