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Exponential frames on unbounded sets
Shahaf Nitzan, Alexander Olevskii, Alexander Ulanovskii
Source abstract
For every set S S of finite measure in R \mathbb {R} we construct a discrete set of real frequencies Λ \Lambda such that the exponential system { exp ( i λ t ) , λ ∈ Λ } \{\exp (i\lambda t),\lambda \in \Lambda \} is a frame in L 2 ( S ) L^2(S) .
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