Abstract
The purpose of this note is to show that solutions of rst and second order Cauchy problems with almost periodic inhomogeneity are almost periodic on the real line whenever the spectrum of the underlying operator is discrete.
Citation
Wolfgang Arendt. Sibylle Schweiker. "DISCRETE SPECTRUM AND ALMOST PERIODICITY." Taiwanese J. Math. 3 (4) 475 - 490, 1999. https://doi.org/10.11650/twjm/1500407161
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