The closure-complement-frontier problem in saturated polytopological spaces

Sara Canilang, Michael P. Cohen, Nicolas Graese +1

Let $X$ be a space equipped with $n$ topologies ${\tau }_1,...,{\tau }_n$ which are pairwise comparable and saturated, and for each $1\le i\le n$ let $k_i$ and $f_i$ be the associated topolo…