monotonically countably metacompact

Definition

A topological space X is said to be monotonically countably metacompact if there is a function m on the set of countable open covers of X (which is called a monotone metacompactness operator) such that:

1. if U is a countable open cover of X, then m(U) is a point-finite open cover of X which refines U;
2. if U and V are countable open covers of X with U refining V, then m(U) refines m(V).

Remark

• See monotonically compact

Reference

• 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)