Speaker: 

Steven Leth

Institution: 

University of Northern Colorado

Time: 

Monday, June 3, 2019 - 4:00pm

Location: 

RH 440R

Recently, nonstandard and ultrafilter methods have been used to obtain a number of significant results in Combinatorial Number Theory.  In this talk I will provide a brief overview of some recent work in this area, focusing on the use of nonstandard methods in problems involving the existence of various types of structured sets contained in subsets of the natural numbers that satisfy various density conditions.