On convergence for the -integral
On converse theorems of trigonometric approximation in weighted variable exponent Lebesgue spaces.
On convex functions bounded below.
On convex functions bounded below. (Short Communication).
On convex stochastic processes.
On convolution of continuous functions
On Darboux selections
On Darboux solutions of the Euler's equation.
On Denjoy type extensions of the Pettis integral
In this paper two Denjoy type extensions of the Pettis integral are defined and studied. These integrals are shown to extend the Pettis integral in a natural way analogous to that in which the Denjoy integrals extend the Lebesgue integral for real-valued functions. The connection between some Denjoy type extensions of the Pettis integral is examined.
On Denjoy-Dunford and Denjoy-Pettis integrals
The two main results of this paper are the following: (a) If X is a Banach space and f : [a,b] → X is a function such that x*f is Denjoy integrable for all x* ∈ X*, then f is Denjoy-Dunford integrable, and (b) There exists a Dunford integrable function which is not Pettis integrable on any subinterval in [a,b], while belongs to for every subinterval J in [a,b]. These results provide answers to two open problems left by R. A. Gordon in [4]. Some other questions in connection with Denjoy-Dundord...
On derivations on certain function spaces and their relation to the differential operator. (Über Derivationen auf gewissen Funktionenräumen und deren Beziehung zum Differentiationsoperator.)
On derivatives of functions defined on disconnected sets, I
On derivatives of functions defined on disconnected sets, II
On determining sets for the class of somewhat continuous functions
On differentiability of Peano type functions
On differentiability of Peano type functions
On differentiability of Peano type functions. II
On differentiability with respect to parameters of the Lebesgue integral.
On Dini Derivatives and on a Property of Denjoy.
On Dini derivatives and on certain classes of Zahorski