We will be holding JGMRT this semester on Fridays from 14:00-15:00.

**2/16:**Tiger Cheng**Title:**A gentle introduction to stacks**Abstract:**This talk will be a very gentle introduction to some of the ideas of stacks. I will not claim to be comprehensive, nor super precise, but my goal is to introduce some of the ideas behind stacks and why people thought of these things. Stacks can be thought of as spaces where instead of having an underlying set with a topology, we replace the set with a*site*\(\mathcal{C}\) which is a category equipped with what's called a*Grothendieck topology*. In Part I of the talk, I will talk about some of the motivation behind stacks coming from moduli theory. In Part II I will set up some technology regarding Grothendieck topologies, and in Part III, I will define what a stack is and show off some examples.**2/23:***Empty***3/1:***Empty***3/8:**Luke Conners (TBD)**3/15:**Spring Break**3/22:****3/29:**Spring Holiday**4/5:****4/12:****4/19****4/26**