Sufficient conditions for the existence of points of symmetrically quasi-continuity and of symmetrically cliquishness of functions of two variables

Abstract

It is established sufficientconditions under which for the function $f:Ximes Yo Z$ there is a residualin $X$ set $A$, such that the function $f$ is symmetrically quasi-continuous/cliquish/ one with respect to $x$ at each point of the set $Aimes Y$.