Place: Fields Institute (Library) Date: September 7, 2018 (13:30-15:00) Speaker: Osvaldo Guzman Title: On Restricted MADness Abstract: Let $\mathcal{I}$ be an ideal on $\omega.$ We define \textsf{cov}$^{\ast}\left( \mathcal{I}\right)$ as the least size of a family $\mathcal{B\subseteq I}$ such that for every infinite $X\in\mathcal{I}$ there is $B\in\mathcal{B}$ for which $B\cap X$ ...