Pith Number

pith:HO5XAP6I

pith:2014:HO5XAP6IHE5ZOBTNC3IPACWBN7

not attested not anchored not stored refs pending

Robust spiked random matrices and a robust G-MUSIC estimator

Romain Couillet

arxiv:1404.7685 v1 · 2014-04-30 · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HO5XAP6IHE5ZOBTNC3IPACWBN7}

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	2026-05-18T02:52:50.127038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bbb703fc8393b97066d16d0f00ac16fdf4ee7c4bf730a5c6c48e6067f9eedb8

Aliases

arxiv: 1404.7685 · arxiv_version: 1404.7685v1 · doi: 10.48550/arxiv.1404.7685 · pith_short_12: HO5XAP6IHE5Z · pith_short_16: HO5XAP6IHE5ZOBTN · pith_short_8: HO5XAP6I

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/HO5XAP6IHE5ZOBTNC3IPACWBN7 \
  | 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: 3bbb703fc8393b97066d16d0f00ac16fdf4ee7c4bf730a5c6c48e6067f9eedb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2eb5ad161d6af0001d861de8836a4529dae7e8dcdb25cb577e33f4c615540829",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2014-04-30T11:17:09Z",
    "title_canon_sha256": "11f93efcac8eddaf541b7e6cc4310f95a2691b3a77a8b69b7ece0c1e02a31087"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.7685",
    "kind": "arxiv",
    "version": 1
  }
}