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A note on integration by parts for abstract Perron-Stieltjes integrals

Štefan Schwabik (2001)

Mathematica Bohemica

Integration by parts results concerning Stieltjes integrals for functions with values in Banach spaces are presented. The background of the theory is the Kurzweil approach to integration based on Riemann type integral sums, which leads to the Perron integral.

A note on integration of rational functions

Jan Mařík (1991)

Mathematica Bohemica

Let P and Q be polynomials in one variable with complex coefficients and let n be a natural number. Suppose that Q is not constant and has only simple roots. Then there is a rational function ϕ with ϕ ' = P / Q n + 1 if and only if the Wronskian of the functions Q ' , ( Q 2 ) ' , ... , ( Q n ) ' , P is divisible by Q .

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