Zoom Meeting: https://pitt.zoom.us/j/95465740077

Meeting Id: 954 657 40077

Friday, October 29, 2021 - 10:00

Zoom

### Abstract or Additional Information

Given an almost disjoint family A on omega, there is a topological space associated to A, namely the space $\Psi(A)$, whose underlying set is omega union the family A, and which topology satisfies: i) omega is discrete, ii) neighborhoods for an element a in A have the form {a}union (a\F), where F is a finite subset of omega.

In this talk, we plan to have fun by using combinatorics of the Cantor tree to produce "a lot" of pairwise non-homeomorphic $\Psi(A)$-spaces.