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Multipliers of summable derivatives. (English) Zbl 0554.26004
The main result of the paper is the characterization of the system of all functions g such that the product $$fg$$ is a derivative for each summable derivative f. It turns out that the above mentioned system is the intersection of the class of finite derivatives with the class of functions fulfilling a condition closely related to bounded variation.
Reviewer: J.Niewiarowsky

##### MSC:
 26A24 Differentiation (real functions of one variable): general theory, generalized derivatives, mean value theorems
##### Keywords:
summable derivative; bounded variation