*Definition [#i4eb8448] A topological space X is said to be monotonically countably compact if there is a function m on the set of countable open covers of X (which is called a monotone compactness operator) such that: +if U is a countable open cover of X, then m(U) is a finite open cover of X which refines U; +if U and V are coutable open covers of X with U refining V, then m(U) refines m(V). *Remark [#hd10e394] -See [[monotonically compact]]. *Reference [#vdf997a5] -H. R. Bennett, K. P. Hart, and D. J. Lutzer, ''A note on monotonically metacompact spaces'', Topology and its Applications, 157(2010), 456-465. -http://www.math.wm.edu/~lutzer/drafts/BigBushes.pdf (preprint)