On the derivative of indefinite RC-integral
A monotonicity criterion for arbitrary functions
Another Ascoli theorem for multi-valued functions
The article contains no abstract
Uniform limits of Darboux functions on the Euclidean plane
On level sets of approximate derivative and approximate symmetric derivative
A proof of J. Mařík's lemma
An approximative generalization of Zahorski's theorem on derivative
On the set where an approximate derivative is a derivative
Derivates for symmetric functions
Pseudo-symmetric differentiation
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