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researcher

S. P'ech'e

7 papers hereh-index 7412 citations8 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • middle author1
  • last author6

Across the 7 of 7 papers where every author was matched, so the position is known.

fields
  • math.PR6
  • math-ph1

identity via Semantic Scholar / OpenAlex

activity
20062020
most citedThe largest eigenvalues of sample covariance matrices for a spiked population: diagonal case

52 citations · 104 across the 6 of their papers we have counts for

collaborators
Showing 2009 · math.PRShow all

1 paper · 2 filters

math.PR2009★ 11 cited

Eigenvectors of some large sample covariance matrix ensembles

Olivier Ledoit, Sandrine Péché

We consider sample covariance matrices SN​=p1​ΣN1/2​XN​XN∗​ΣN1/2​ where XN​ is a N×p real or complex matrix with i.i.d. entries with finite $12^{\rm th…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.