Department of

# Mathematics

Seminar Calendar
for events the day of Tuesday, July 28, 2020.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
      June 2020              July 2020             August 2020
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                      1
7  8  9 10 11 12 13    5  6  7  8  9 10 11    2  3  4  5  6  7  8
14 15 16 17 18 19 20   12 13 14 15 16 17 18    9 10 11 12 13 14 15
21 22 23 24 25 26 27   19 20 21 22 23 24 25   16 17 18 19 20 21 22
28 29 30               26 27 28 29 30 31      23 24 25 26 27 28 29
30 31


Tuesday, July 28, 2020

2:00 pm in Zoom,Tuesday, July 28, 2020

#### 11/4-colorability of subcubic triangle-free graphs

###### Bernard Lidicky (Iowa State University)

Abstract: We prove that every connected subcubic triangle-free graph except for two exceptional graphs on $14$ vertices has fractional chromatic number at most $11/4$. This is a joint work with Zdenek Dvorak and Luke Postle.