Pith Number

pith:45PCIXCQ

pith:2011:45PCIXCQ2KWKS2CYLRWX2VS2UD

not attested not anchored not stored refs pending

A Subspace Estimator for Fixed Rank Perturbations of Large Random Matrices

Jamal Najim (LTCI), Pascal Vallet (LIGM), Philippe Loubaton (LIGM), Walid Hachem (LTCI), X. Mestre (CTTC)

arxiv:1106.1497 v2 · 2011-06-08 · math.PR · 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{45PCIXCQ2KWKS2CYLRWX2VS2UD}

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	2026-05-18T03:48:24.392411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e75e245c50d2aca968585c6d7d565aa0fb3af4af4435ec93055f1da86086f650

Aliases

arxiv: 1106.1497 · arxiv_version: 1106.1497v2 · doi: 10.48550/arxiv.1106.1497 · pith_short_12: 45PCIXCQ2KWK · pith_short_16: 45PCIXCQ2KWKS2CY · pith_short_8: 45PCIXCQ

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/45PCIXCQ2KWKS2CYLRWX2VS2UD \
  | 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: e75e245c50d2aca968585c6d7d565aa0fb3af4af4435ec93055f1da86086f650

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c94f17071163a54db843083952f2620cc05171c7fca67b648464a382353096e",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2011-06-08T05:01:38Z",
    "title_canon_sha256": "4a3aea5156f0243bf05c1b0662998b0e61d0f65e3126a790059b432165f70e5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.1497",
    "kind": "arxiv",
    "version": 2
  }
}