151 citations · 264 across the 42 of their papers we have counts for
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math.CA2011
Size of orthogonal sets of exponentials for the disk
Alex Iosevich, Mihail N. Kolountzakis
Suppose $Λ\subseteq \RR^2$ has the property that any two exponentials with frequency from are orthogonal in the space , where $D \subseteq \RR^2$ is the unit disk. Such…
math.CA2011
Periodicity of the spectrum in dimension one
Alex Iosevich, Mihail N. Kolountzakis
A bounded measurable set , of Lebesgue measure 1, in the real line is called spectral if there is a set of real numbers ("frequencies") such that the exponential functions $…
math.CA2011
Periodicity of the spectrum of a finite union of intervals
Mihail N. Kolountzakis
A set , of Lebesgue measure 1, in the real line is called spectral if there is a set of real numbers such that the exponential functions form a compl…