activity
19962026
most citedThe Krein spectral shift and rank one perturbations of spectra

11 citations · 45 across the 20 of their papers we have counts for

collaborators

25 papers

math.CA2026

Invariant sets of the double Hilbert transform

Evgeny Abakumov, Komla Domelevo, Stefanie Petermichl +1

We present an example that shows that the double Hilbert transform $\H$ can have the characteristic function of an open set of finite measure in as a…

math.SP2026

Complex Analysis in completeness, spectral and scattering problems

Alexei Poltoratski

These lectures are aimed at junior researchers seeking to enter the field of applications of complex analysis to harmonic analysis, Fourier analysis, spectral and scattering theory…

math.CV2026

A maximal estimate for the non-linear Fourier transform

Alexei Poltoratski

We discuss estimates for the maximal operator associated with the non-linear Fourier transform of an -function on the half-line. For potentials with bounded dyadic masse…

math.CV2025

Etudes in the inverse spectral problem, II

Nikolai Makarov, Alexei Poltoratski

We apply the approach developed in our previous papers to obtain examples of solutions to the inverse spectral problem (ISP) for the canonical Hamiltonian system. One of our goals…

math.SP2022★ 4 cited

Periodic approximations in inverse spectral problems for canonical Hamiltonian systems

Alexei Poltoratski, Ashley Ran Zhang

This note is devoted to inverse spectral problems for canonical Hamiltonian systems on the half-line. An approach to inverse spectral problems based on the use of truncated Toeplit…

math.SP2022

Etudes for the inverse spectral problem

Nikolai Makarov, Alexei Poltoratski

In this note we study inverse spectral problems for canonical Hamiltonian systems, which encompass a broad class of second order differential equations on a half-line. Our goal is…