Events - Department of Mathematics

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The Department of Mathematics is a bustling place full of new ideas. We host several events that occur throughout the year, including seminars, colloquium, conferences, and social events. Our seminars and colloquium are open to the public: all students, faculty, or alumni who are interested are welcome to join us for exciting talks on the leading edge of mathematics research!

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Graph Theory & Combinatorics Seminar

Event Type
Department of Mathematics
Altgeld 241
Feb 14, 2023   1:00 pm  
Seog-Jin Kim (Konkuk University, Korea)
Seog-Jin Kim (Konkuk University, Korea)
The Alon-Tarsi number of K_5-minor-free graphs

Abstract: In this talk, we show the following three theorems. Let G be a K_5-minor-free graph. Then Alon-Tarsi number of G is at most 5, there exists a matching M of G such that the Alon-Tarsi number of G-M is at most 4, and there exists a forest F such that the Alon-Tarsi number of G-E(F) is at most 3. This is joint with Toshiki Abe and Kenta Ozeki. 

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