$z^circ$-filters and related ideals in $c(x)$

Authors

rostam mohamadian

shahid chamran university of ahvaz

abstract

in this article we introduce the concept of $z^circ$-filter on a topological space $x$. we study and investigate the behavior of $z^circ$-filters and compare them  with corresponding ideals, namely, $z^circ$-ideals of $c(x)$,  the ring of real-valued continuous functions on a completely regular hausdorff space $x$. it is observed that $x$ is a compact space if and only if every $z^circ$-filter is ci-fixed. finally, by using  $z^circ$-ultrafilters, we prove that any arbitrary product of i-compact spaces is i-compact.

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Journal title:
algebraic structures and their applications

جلد ۲، شماره ۲، صفحات ۵۷-۶۶

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