Abstract
A bounded set Ω⊂Rd is called a spectral set if the space L2(Ω) admits a complete orthogonal system of exponential functions. We prove that a cylindric set Ω is spectral if and only if its base is a spectral set. A similar characterization is obtained of the cylindric sets which can tile the space by translations.
Original language | English |
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Pages (from-to) | 2808-2821 |
Number of pages | 14 |
Journal | Journal of Functional Analysis |
Volume | 271 |
Issue number | 10 |
DOIs | |
State | Published - 15 Nov 2016 |
Bibliographical note
Publisher Copyright:© 2016 Elsevier Inc.
Keywords
- Fuglede's conjecture
- Spectral set
- Tiling