On Köpcke and Pompeiu functions
On Kurzweil-Stieltjes equiintegrability and generalized BV functions
We present sufficient conditions ensuring Kurzweil-Stieltjes equiintegrability in the case when integrators belong to the class of functions of generalized bounded variation.
On level sets of approximate derivative and approximate symmetric derivative
On majorization, favard and Berwald inequalities.
On metric preserving functions and infinite derivatives.
On relations among metric derived numbers
On results of Jan Mařík in the theory of derivatives
Results of Jan Marik on the theory of derivatives of real functions are described.
On some properties of J-convex stochastic processes.
On some properties of symmetric derivatives
On symmetric derivatives and on properties of Zahorski
On the asymptotics of mean value points for some finite-difference operators.
On the Boundary Derivative for Univalent Functions.
On the derivative of indefinite RC-integral
On the equation
On the existence of functions with perfect level sets.
On the first derivative of real functions (Preliminary communication)
On the functional equation f(...(x) + g(y)) = ..(x) * h(x+y). (Short Communication).
On the functional equation f(...(x) + g(y)) = ...(x) * h(x+y).
On the intersection of the sets of the right and left internal approximate derivatives
On the k-pseudo-symmetrical approximate differentiability