Department of

August 2021 September 2021October 2021Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su MoTuWe Th Fr Sa 1 2 3 4 5 6 7 1 2 3 4 1 2 8 9 10 11 12 13 14 5 6 7 8 9 10 11 3 4 5 6 7 8 9 15 16 17 18 19 20 21 12 13 14 15 16 17 18 10 11 12 13 14 15 16 22 23 24 25 26 27 28 19 20 21 22 23 24 25 17 18 19 20 21 22 23 29 30 31 26 27 28 29 30 24 252627 28 29 30 31

Friday, February 12, 2021

**Abstract:** An old conjecture in additive combinatorics asks: what is the largest sum-free subset of any set of N positive integers? Here the word "largest" should be understood in terms of cardinality. For example, the largest sum-free subset of the first N positive integers has cardinality [(N+1)/2], which is the number of odd integers smaller than N, as well as the number of integers that lie in the interval [N/2,N]. In this talk, I will discuss a special case of the sum-free conjecture and the analogous conjecture on (k,l)-sum-free sets. This is a joint work with Yifan Jing

Friday, February 19, 2021

Friday, February 26, 2021

Friday, March 5, 2021

Friday, March 12, 2021

Friday, March 19, 2021

Friday, April 2, 2021

Friday, September 3, 2021

Friday, September 10, 2021

Friday, September 17, 2021

Friday, September 24, 2021

Friday, October 1, 2021

Friday, October 8, 2021