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For any with we provide a simple construction of an -Hölde function and a -Hölder function such that the integral fails to exist even in the Kurzweil-Stieltjes sense.
A fixed point theorem in ordered spaces and a recently proved monotone convergence theorem are applied to derive existence and comparison results for solutions of a functional integral equation of Volterra type and a functional impulsive Cauchy problem in an ordered Banach space. A novel feature is that equations contain locally Henstock-Kurzweil integrable functions.
When a real-valued function of one variable is approximated by its th degree Taylor polynomial, the remainder is estimated using the Alexiewicz and Lebesgue -norms in cases where or are Henstock-Kurzweil integrable. When the only assumption is that is Henstock-Kurzweil integrable then a modified form of the th degree Taylor polynomial is used. When the only assumption is that then the remainder is estimated by applying the Alexiewicz norm to Schwartz distributions of order 1.
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