| http://www.w3.org/ns/prov#value | - Feckan et al. [36] presented the controllability results corresponding to two admissible control sets for fractional functional evolution equations of Sobolev type in Banach spaces with the help of two new characteristic solution operators and their properties, such as boundedness and compactness.It should be mentioned that there is no work yet reported on the approximate controllability of Sobole
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