Organizing Committee
Abstract

The problem of decomposing a function into a sum of simply structured functions is a classical area of research in Analysis. Exciting recent progress, e.g. the solution to the Kadison-Singer problem, results about exponential frames and Riesz bases in various settings, and results about orthogonal exponential bases for convex polytopes, has re-energized discussion in this area, opened new directions for study, and turned it into an even more active and fruitful area for research. The goal of this workshop is to discuss such new developments in this area. In particular, the workshop will focus on problems regarding exponential systems in weighted spaces and the Fuglede conjecture. Related settings will also be of interest, for example: (i) Systems of vectors obtained by translating, translating and modulating, or translating and dilating a single function over the line; (ii) Sampling and decomposition of functions in the finite dimensional setting; (iii) Sampling and interpolation of functions in analytic function spaces.

Confirmed Speakers & Participants

Workshop Schedule

Monday, June 4, 2018
TimeEventLocationMaterials
9:00 - 9:25Registration - ICERM 121 South Main Street, Providence RI 0290311th Floor Collaborative Space 
9:25 - 9:30Welcome - ICERM Director11th Floor Lecture Hall 
9:30 - 10:20Exponential frames and syndetic Riesz sequences - Marcin Bownik, University of Oregon11th Floor Lecture Hall
10:20 - 10:50Coffee/Tea Break 11th Floor Collaborative Space 
10:50 - 11:40Toeplitz Methods In Gap And Spectral Problems - Alexei Poltoratski, Texas A&M University11th Floor Lecture Hall
11:50 - 12:40The Wavelet Existence Problem - Darrin Speegle, Saint Louis University11th Floor Lecture Hall
12:40 - 2:20Break for Lunch / Free Time  
2:20 - 3:10Fuglede's tiling-spectrality conjecture for convex polytopes - Nir Lev, Bar-Ilan University11th Floor Lecture Hall
3:10 - 3:40Coffee/Tea Break 11th Floor Collaborative Space 
3:40 - 4:30Spectrality of Product Domains - Rachel Greenfeld, Bar Ilan University11th Floor Lecture Hall
4:40 - 6:10Welcome Reception/ Poster Session11th Floor Collaborative Space 
Tuesday, June 5, 2018
TimeEventLocationMaterials
9:30 - 10:20Fuglede's spectral set conjecture on cyclic groups - Romanos Malikiosis, TU Berlin11th Floor Lecture Hall
10:20 - 10:50Coffee/Tea Break 11th Floor Collaborative Space 
10:50 - 11:40Discrete Translates in Function Spaces. - Alexander Olevskii, Tel Aviv University, School of Math.11th Floor Lecture Hall
11:50 - 12:40Balian-Low type theorems for finite sequences - Jan-Fredrik Olsen, Lund University11th Floor Lecture Hall
12:40 - 2:20Break for Lunch / Free Time  
2:20 - 3:10Frames generated from exponential of operators. - Akram Aldroubi, Vanderbilt University11th Floor Lecture Hall
3:10 - 3:40Coffee/Tea Break 11th Floor Collaborative Space 
3:40 - 4:30On Convergence of Rearranged Fourier Series - Keaton Hamm, Vanderbilt University11th Floor Lecture Hall
4:40 - 5:10Open problems in spectral theory - Alexei Poltoratski, Texas A&M University11th Floor Lecture Hall 
Wednesday, June 6, 2018
TimeEventLocationMaterials
9:30 - 10:20A survey of applications of geometric combinatorics in frame theory  - Alex Iosevich, University of Rochester11th Floor Lecture Hall
10:20 - 10:50Coffee/Tea Break 11th Floor Collaborative Space 
10:50 - 11:40Interpolating sequences by polynomials - Joaquim Ortega-Cerdà, University of Barcelona11th Floor Lecture Hall
11:50 - 12:40Positive definite functions and the problem of mutually unbiased bases - Mate Matolcsi, Budapest University of Technology11th Floor Lecture Hall
12:40 - 2:20Break for Lunch / Free Time  
2:20 - 3:10The Fuglede conjecture holds in Zp × Zp - Azita Mayeli, City University of New York11th Floor Lecture Hall
3:10 - 3:40Coffee/Tea Break 11th Floor Collaborative Space 
3:40 - 4:30Uncertainty Principles for Fourier Multipliers - Michael Northington, Georgia Institute of Technology11th Floor Lecture Hall
4:40 - 5:10Open problems regarding mutually unbiased bases - Mate Matolcsi, Budapest University of Technology11th Floor Lecture Hall
Thursday, June 7, 2018
TimeEventLocationMaterials
9:30 - 10:20Three bases and other tricks to replace Hankel and Toeplitz - Stefanie Petermichl, Université Paul Sabatier11th Floor Lecture Hall
10:20 - 10:50Coffee/Tea Break 11th Floor Collaborative Space 
10:50 - 11:40The Newman-Shapiro problem - Alexander Borichev, Aix-Marseille University11th Floor Lecture Hall
11:50 - 12:40Riesz bases, Meyer's quasicrystals and bounded remainder sets - Sigrid Grepstad, Norwegian University of Science and Technology (NTNU)11th Floor Lecture Hall
12:40 - 2:20Break for Lunch / Free Time  
2:20 - 3:10Few remarks on the uncertainty principle. - Mishko Mitkovski, Clemson University11th Floor Lecture Hall
3:10 - 3:40Coffee/Tea Break 11th Floor Collaborative Space 
3:40 - 4:30Some open problems related to exponential systems - Shahaf Nitzan, Georgia Tech11th Floor Lecture Hall
4:40 - 5:10Open problems in wavelet theory - Marcin Bownik, University of Oregon11th Floor Lecture Hall
Friday, June 8, 2018
TimeEventLocationMaterials
9:30 - 10:20Hausdorff operators in $H^p$ spaces, $0 - Elijah Liflyand, Bar-Ilan University11th Floor Lecture Hall
10:20 - 10:50Coffee/Tea Break 11th Floor Collaborative Space 
10:50 - 11:40Some open problems about tilings and spectra - Mihalis Kolountzakis, University of Crete11th Floor Lecture Hall
11:50 - 12:40Nonnegativity for structured complete systems - Alex Powell, Vanderbilt University11th Floor Lecture Hall
12:40 - 2:20Break for Lunch / Free Time  
2:20 - 3:10Fourier frame for singular measures - Chun-Kit Lai, San Francisco State University11th Floor Lecture Hall
3:10 - 3:40Coffee/Tea Break 11th Floor Collaborative Space 
3:40 - 4:30Multi-tiling and equidecomposability of polytopes by lattice translates - Bochen Liu, Bar-Ilan University11th Floor Lecture Hall

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Lecture Videos

Fourier frame for singular measures

Chun-Kit Lai
San Francisco State University
June 8, 2018

Some open problems about tilings and spectra

Mihalis Kolountzakis
University of Crete
June 8, 2018

Riesz bases, Meyer's quasicrystals and bounded remainder sets

Sigrid Grepstad
Norwegian University of Science and Technology (NTNU)
June 7, 2018

The Newman-Shapiro problem

Alexander Borichev
Aix-Marseille University
June 7, 2018

Uncertainty Principles for Fourier Multipliers

Michael Northington
Georgia Institute of Technology
June 6, 2018

The Fuglede Conjecture holds in Zp x Zp

Azita Mayeli
City University of New York
June 6, 2018

Interpolating real polynomials

Joaquim Ortega-Cerdá
University of Barcelona
June 6, 2018

Discrete Translates in Function Spaces

Alexander Olevskii
Tel Aviv University
June 5, 2018

Spectrality of Product Domains

Rachel Greenfeld
Bar-Ilan University
June 4, 2018

The Wavelet Existence Problem

Darrin Speegle
Saint Louis University
June 4, 2018