cyclic groups 1direction problem 1discrete fourier analysis 1finite fields 1fuglede's conjecture 1inductive techniques 1polynomial degree 1range sum 1spectral sets 1square-free order 1tiling 1
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math.CA2024
Spectrality of the product does not imply that the components are spectral
Gábor Somlai
Greenfeld and Lev conjectured that the Cartesian product of two sets and is spectral if and only if and are spectral. We construct a counterexample to this fact usi…
math.CA2024
Spectral Tile Direction in the Group
Thomas Fallon, Gergely Kiss, Azita Mayeli +2
Let , , and be distinct primes such that . We prove that every spectral set in the cyclic group is a tile. Since the reverse direction is…