•  64
    Intersection numbers of families of ideals
    with M. Hrušák, U. A. Ramos-García, and O. A. Téllez-Nieto
    Archive for Mathematical Logic 52 (3-4): 403-417. 2013.
    We study the intersection number of families of tall ideals. We show that the intersection number of the class of analytic P-ideals is equal to the bounding number ${\mathfrak{b}}$ , the intersection number of the class of all meager ideals is equal to ${\mathfrak{h}}$ and the intersection number of the class of all F σ ideals is between ${\mathfrak{h}}$ and ${\mathfrak{b}}$ , consistently different from both