Department of

# Mathematics

Seminar Calendar
for events the day of Monday, January 29, 2018.

.
events for the
events containing

More information on this calendar program is available.
Questions regarding events or the calendar should be directed to Tori Corkery.
    December 2017           January 2018          February 2018
Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
1  2       1  2  3  4  5  6                1  2  3
3  4  5  6  7  8  9    7  8  9 10 11 12 13    4  5  6  7  8  9 10
10 11 12 13 14 15 16   14 15 16 17 18 19 20   11 12 13 14 15 16 17
17 18 19 20 21 22 23   21 22 23 24 25 26 27   18 19 20 21 22 23 24
24 25 26 27 28 29 30   28 29 30 31            25 26 27 28
31


Monday, January 29, 2018

2:00 pm in 345 Altgeld Hall,Monday, January 29, 2018

#### The Bezoutian of a Rational Function

###### Daniel Carmody   [email] (UIUC Math)

Abstract: The computation of the pointed endomorphisms of $\mathbb P^1$ gives a first approximation to the zeroth stable homotopy group of the motivic sphere. In this introductory talk, following Cazanave, I’ll give some examples of a basic construction which associates a bilinear form to a rational function $\mathbb P^1 \rightarrow \mathbb P^1$. This will hint at a reason for the appearance of Grothendieck-Witt groups in stable motivic homotopy theory.

4:00 pm in 245 Altgeld Hall,Monday, January 29, 2018

#### To Be Announced

###### Bruce Berndt   [email] (Department of Mathematics, University of Illinois at Urbana-Champaign)

5:00 pm in 241 Altgeld Hall,Monday, January 29, 2018

#### Von Neumann Dimension and W*-Modules

###### Marius Junge (UIUC)

Abstract: We start our investigation on L2 Betti numbers by analyzing Hilbert modules over von Neumann algebras and their dimension function.