Set theoretic real analysis.
Some remarks on the history of functional analysis.
Linear subspace of Rl without dense totally disconnected subsets
In [1] the author showed that if there is a cardinal κ such that then there exists a completely regular space without dense 0-dimensional subspaces. This was a solution of a problem of Arkhangel’skiĭ. Recently Arkhangel’skiĭ asked the author whether one can generalize this result by constructing a completely regular space without dense totally disconnected subspaces, and whether such a space can have a structure of a linear space. The purpose of this paper is to show that indeed such a space can...
L-space without any uncountable 0-dimensiolan subspace
Baire classification of ...-density and ...-approximately continous functions.
Density Continuity versus Continuity.
Category theorems concerning Z-density continuous functions
The ℑ-density topology on ℝ is a refinement of the natural topology. It is a category analogue of the density topology [9, 10]. This paper is concerned with ℑ-density continuous functions, i.e., the real functions that are continuous when the ℑ-densitytopology is used on the domain and the range. It is shown that the family of ordinary continuous functions f: [0,1]→ℝ which have at least one point of ℑ-density continuity is a first category subset of C([0,1])= f: [0,1]→ℝ: f is continuous equipped...
Cylinder problem
Semigroups of ...-density continuous functions.
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