3 citations · 5 across the 3 of their papers we have counts for
4 papers
The conformal measures of a normal subgroup of a cocompact Fuchsian group
Ofer Shwartz
In this paper, we study the conformal measures of a normal subgroup of a cocompact Fuchsian group. In particular, we relate the extremal conformal measures to the eigenmeasures of…
Thermodynamic Formalism for Transient Potential Functions
Ofer Shwartz
We study the thermodynamic formalism of locally compact Markov shifts with transient potential functions. In particular, we show that the Ruelle operator admits positive continuous…
Detecting the large entries of a sparse covariance matrix in sub-quadratic time
Ofer Shwartz, Boaz Nadler
The covariance matrix of a -dimensional random variable is a fundamental quantity in data analysis. Given i.i.d. observations, it is typically estimated by the sample covari…
Roy's largest root under rank-one alternatives:The complex valued case and applications
Prathapasinghe Dharmawansa, Boaz Nadler, Ofer Shwartz
The largest eigenvalue of a Wishart matrix, known as Roy's largest root (RLR), plays an important role in a variety of applications. Most works to date derived approximations to it…