Space S000185

One-point compactification of the metric fan

Consider the set ω2{x,y}\omega^2\cup\{\infty_x,\infty_y\} with points of ω2\omega^2 isolated, neighborhoods of x\infty_x containing all but finitely-many columns, and neighborhoods of y\infty_y containing all but finitely-many rows.

Equivalently, the one-point compactification of Metric fan with ω\omega-many spines.

One-point compactification of the metric fan is a counterexample to the converse of 0 theorems