Yilmaz, YilmazErdogan, Bagdagul KartalLevent, Halise2026-04-042026-04-0420242227-7390https://doi.org/10.3390/math12192982https://hdl.handle.net/11616/108523In this study, we defined a kind of Fourier expansion of set-valued square-integrable functions. In fact, we have seen that the classical Fourier basis also constitutes a basis for the Hilbert quasilinear space L2(-pi,pi,Omega(C)) of Omega(C)-valued square-integrable functions, where Omega(C) is the class of all compact subsets of complex numbers. Furthermore, we defined the quasi-Paley-Wiener space, QPW, using the Fourier transform defined for set-valued functions and thus we showed that the sequence sinc.-kk is an element of Z form also a basis for QPW. We call this result Shannon's sampling theorem for set-valued functions. Finally, we gave an application based on this theorem.eninfo:eu-repo/semantics/openAccessinner-product quasilinear spacesnon-deterministic signalsFourier expansion of set-valued square-integrable functionsShannon's sampling theorem for set-valued functionsHilbert quasilinear spacesArticle121910.3390/math121929822-s2.0-85206305222Q1WOS:001331848800001Q10000-0003-1484-782X