AbstractIn this note we will construct, under the assumption that union of less than continuum many meager subsets of R is meager in R, an additive connectivity function f:R→R with Cantor intermediate value property which is not almost continuous. This gives a partial answer to a question of Banaszewski (1997). (See also Question 5.5 of Gibson and Natkaniec (1996–97).) We will also show that every extendable function g:R→R with a dense graph satisfies the following stronger version of the SCIVP property: for every a<b and every perfect set K between g(a) and g(b) there is a perfect set C⊂(a,b) such that g[C]⊂K and g↾C is continuous strictly increasing. This property is used to construct a ZFC example of an additive almost continuous functio...
In the paper wherein the almost continuous functions were first defined [9J, Stallings showed that a...
[EN] As embodied in the title of the paper strong and weak variants of continuity that lie strictly ...
AbstractGiven a space Y, let us say that a space X is a total extender for Y provided that every con...
AbstractIn this note we will construct, under the assumption that union of less than continuum many ...
In this note we will construct several additive Darboux-like functions f : R → R answering some prob...
The main purpose of this paper is to describe two examples. The first is that of an almost continuou...
In his classic paper, Stallings [7] asked if a connec tivity function I ~ I could always be extended...
A function f : R → R is: almost continuous in the sense of Stallings, f ∈ AC, if each open set G ⊂ R...
ABSTRACT. Almost continuous functions and almost continuous retracts are defined in a manner which i...
ABSTRACT. Let X be a compact metric space, K a closed subset of X, Y a Banach space, and g: K- • Y a...
The aim of the present paper is to continue the study of almost perfectly continuous (≡ regular set ...
In the paper we prove that an additive Darboux function f : R → R can be expressed as a composition ...
In this paper we give a sufficient condition for existence of an extension of a lower (upper) semico...
Abstract. We prove that the Covering Property Axiom CPAgameprism, which holds in the iterated perfec...
J. Stallings [9] asked the question: "If one considers 2I = [0,1] embedded in I x I 1 as I x 0...
In the paper wherein the almost continuous functions were first defined [9J, Stallings showed that a...
[EN] As embodied in the title of the paper strong and weak variants of continuity that lie strictly ...
AbstractGiven a space Y, let us say that a space X is a total extender for Y provided that every con...
AbstractIn this note we will construct, under the assumption that union of less than continuum many ...
In this note we will construct several additive Darboux-like functions f : R → R answering some prob...
The main purpose of this paper is to describe two examples. The first is that of an almost continuou...
In his classic paper, Stallings [7] asked if a connec tivity function I ~ I could always be extended...
A function f : R → R is: almost continuous in the sense of Stallings, f ∈ AC, if each open set G ⊂ R...
ABSTRACT. Almost continuous functions and almost continuous retracts are defined in a manner which i...
ABSTRACT. Let X be a compact metric space, K a closed subset of X, Y a Banach space, and g: K- • Y a...
The aim of the present paper is to continue the study of almost perfectly continuous (≡ regular set ...
In the paper we prove that an additive Darboux function f : R → R can be expressed as a composition ...
In this paper we give a sufficient condition for existence of an extension of a lower (upper) semico...
Abstract. We prove that the Covering Property Axiom CPAgameprism, which holds in the iterated perfec...
J. Stallings [9] asked the question: "If one considers 2I = [0,1] embedded in I x I 1 as I x 0...
In the paper wherein the almost continuous functions were first defined [9J, Stallings showed that a...
[EN] As embodied in the title of the paper strong and weak variants of continuity that lie strictly ...
AbstractGiven a space Y, let us say that a space X is a total extender for Y provided that every con...