Department of

# Mathematics

Seminar Calendar
for events the day of Friday, March 19, 2021.

.
events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
    February 2021            March 2021             April 2021
Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
1  2  3  4  5  6       1  2  3  4  5  6                1  2  3
7  8  9 10 11 12 13    7  8  9 10 11 12 13    4  5  6  7  8  9 10
14 15 16 17 18 19 20   14 15 16 17 18 19 20   11 12 13 14 15 16 17
21 22 23 24 25 26 27   21 22 23 24 25 26 27   18 19 20 21 22 23 24
28                     28 29 30 31            25 26 27 28 29 30



Friday, March 19, 2021

2:00 pm in Contact for zoom link,Friday, March 19, 2021

#### The descriptive complexity of classes of Banach lattices

###### Mary Angelica Gramcko-Tursi (UIUC Math)

Abstract: The descriptive complexity of a class of spaces gives us an initial sense of how "nice" the class is. When a set is not "nice," this fact can also be used to derive results related to the existence of universal spaces. In this talk, we present some examples of Borel and non-Borel classes of Banach lattices and some related results derived from their descriptive complexity. We also show areas where the descriptive complexity results on Banach lattices compare and contrast with previously done analogous work on Banach spaces.

4:00 pm in Zoom,Friday, March 19, 2021

#### Free products of Abelian groups in Mod(S)

###### Chris Loa (UIUC)

Abstract: In 2002, Farb and Mosher introduced a notion of convex cocompactness for mapping class groups. The original notion of convex cocompactness comes from Kleinian groups, where it is a special case of geometric finiteness. In recent work Dowdall, Durham, Leininger, and Sisto have introduced a notion of “parabolic” geometric finiteness for mapping class groups. Examples include convex cocompact groups (as one would hope) and finitely generated Veech groups by work of Tang. In this talk we’ll construct a new family of examples of parabolically geometrically finite groups and show why they are undistorted in Mod(S). Please email basilio3 (at) illinois (dot) edu for Zoom information.

4:00 pm in Zoom,Friday, March 19, 2021