activity
20162023
most citedSampling and Approximation of Bandlimited Volumetric Data

2 citations · 5 across the 10 of their papers we have counts for

collaborators

12 papers

math.DS2023★ 1 cited

On the gain of entrainment in a class of weakly contractive bilinear control systems with applications to the master equation and the ribosome flow model

Rami Katz, Thomas Kriecherbauer, Lars Grüne +1

We consider a class of bilinear weakly contractive systems that entrain to periodic excitations. Entrainment is important in many natural and artificial processes. For example, in…

math.OC2023

Internal stabilization of three interconnected semilinear reaction-diffusion PDEs with one actuated state

Constantinos Kitsos, Rami Katz, Emilia Fridman

This work deals with the exponential stabilization of a system of three semilinear parabolic partial differential equations (PDEs), written in a strict feedforward form. The diffus…

math.NA2023

On the accuracy of Prony's method for recovery of exponential sums with closely spaced exponents

Rami Katz, Nuha Diab, Dmitry Batenkov

In this paper we establish accuracy bounds of Prony's method (PM) for recovery of sparse measures from incomplete and noisy frequency measurements, or the so-called problem of supe…

math.NA2022★ 1 cited

Decimated Prony's Method for Stable Super-resolution

Rami Katz, Nuha Diab, Dmitry Batenkov

We study recovery of amplitudes and nodes of a finite impulse train from noisy frequency samples. This problem is known as super-resolution under sparsity constraints and has numer…

math.OC2021★ 1 cited

Global finite-dimensional observer-based stabilization of a semilinear heat equation with large input delay

Rami Katz, Emilia Fridman

We study global finite-dimensional observer-based stabilization of a semilinear 1D heat equation with globally Lipschitz semilinearity in the state variable. We consider Neumann ac…

math.OC2021

Finite-dimensional boundary control of the linear Kuramoto-Sivashinsky equation under point measurement with guaranteed -gain

Rami Katz, Emilia Fridman

Finite-dimensional observer-based controller design for PDEs is a challenging problem. Recently, such controllers were introduced for the 1D heat equation, under the assumption tha…

math.OC2021

Sub-predictors and classical predictors for finite-dimensional observer-based control of parabolic PDEs

Rami Katz, Emilia Fridman

We study constant input delay compensation by using finite-dimensional observer-based controllers in the case of the 1D heat equation. We consider Neumann actuation with nonlocal m…

math.OC2020

Finite-dimensional control of the heat equation: Dirichlet actuation and point measurement

Rami Katz, Emilia Fridman

Recently finite-dimensional observer-based controllers were introduced for the 1D heat equation, where at least one of the observation or control operators is bounded. In this pape…

math.OC2020

Delayed finite-dimensional observer-based control of 1D heat equation under Neumann actuation

Rami Katz, Idan Basre, Emilia Fridman

Recently a constructive method was introduced for finite-dimensional observer-based control of 1D parabolic PDEs. In this paper we present an improved method in terms of the reduce…

math.DS2019

Entrainment to Subharmonic Trajectories in Oscillatory Discrete-Time Systems

Rami Katz, Michael Margaliot, Emilia Fridman

A matrix is called totally positive (TP) if all its minors are positive, and totally nonnegative (TN) if all its minors are nonnegative. A square matrix is called oscillato…

math.NA2018★ 2 cited

Sampling and Approximation of Bandlimited Volumetric Data

Rami Katz, Yoel Shkolnisky

We present an approximation scheme for functions in three dimensions, that requires only their samples on the Cartesian grid, under the assumption that the functions are sufficient…

math.NA2016

On Spectral Approximations With Nonstandard Weight Functions and Their Implementations to Generalized Chaos Expansions

Adi Ditkowski, Rami Kats

In this manuscript, we analyze the expansions of functions in orthogonal polynomials associated with a general weight function in a multidimensional setting. Such orthogonal polyno…