Department of

# Mathematics

Seminar Calendar
for events the day of Friday, January 18, 2019.

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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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Friday, January 18, 2019

11:00 am in 145 Altgeld Hall,Friday, January 18, 2019

#### Organizational Meeting

###### Derek Kielty (Illinois Math)

4:00 pm in 141 Altgeld Hall,Friday, January 18, 2019

#### Organizational Meeting

###### Nachiketa Adhikari (UIUC)

Abstract: We will draft a schedule of the seminar talks this semester. Please join us and sign up if you want to speak (you don't have to decide on a topic or abstract now). As usual, there will be cookies. All are welcome!

4:00 pm in 345 Altgeld Hall,Friday, January 18, 2019

#### Generic flat pregeometries

###### Omer Mermelstein (University of Wisconsin, Madison.)

Abstract: The property of "flatness" of a pregeometry (matroid) is best known in model theory as the device with which Hrushovski showed that his example refuting Zilber's conjecture does not interpret an infinite group. I will dedicate the first part of this talk to explaining what flatness is, how it should be thought of, and how closely it relates to hypergraphs and Hrushovski's construction method. In the second part, I will conjecture that the family of flat pregeometries associated to strongly minimal sets is model theoretically nice, and share some intermediate results.