Department of

# Mathematics

Seminar Calendar
for events the day of Monday, April 3, 2017.

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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.
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Monday, April 3, 2017

8:30 am in 104 Illini Union,Monday, April 3, 2017

#### COACh: Professional Development Workshop

###### Mary Silber and Pushpa Murthy (University of Chicago, Michigan Technological University)

Abstract: The AWM would like to invite all graduate students and postdocs to participate in the Professional Development workshop on Monday April 3rd starting at 8:30am. The workshop is on Career Launch and Acceleration and the duration is 3.5-4 hours, in the afternoon we will have a 1 hr informal chat with the facilitators. Please register to participate https://sites.google.com/view/coachworkshop/home .

4:00 pm in 245 Altgeld Hall,Monday, April 3, 2017

#### Mobius transformations in Biology

###### Zoi Rapti (Department of Mathematics, University of Illinois)

Abstract: In this talk I will first introduce a few compartmental models based on differential equations that describe biological phenomena, such as animal dispersion and epidemics. I will then review the Mobius transformation and its properties. Finally, I will explain how such transformations arise in the stability analysis of steady states in the models. This is joint work with Jared Bronski.

4:00 pm in 243 Altgeld Hall,Monday, April 3, 2017

#### Vector fields on a stack form a Lie 2-algebra.

###### Eugene Lerman (UIUC)

Abstract: (joint work with Daniel Berwick-Evans). We prove that the category of vector fields on a geometric stack is a Lie 2-algebra. I will start by sketching out the definitions of a stack, a geometric stack, vector field on a stack and of a (Baez-Crans) Lie 2-algebra, which is a categorified version of a Lie algebra.

5:00 pm in 241 Altgeld Hall,Monday, April 3, 2017

#### Embedding of Heisenberg groups

###### Jeremy Tyson (UIUC)

Abstract: Jeremy will present the last part of the blow up argmument