## Centralizer is inclusion-reversing

Solution to Abstract Algebra by Dummit & Foote 3rd edition Chapter 2.2 Exercise 2.2.3 Let $G$ be a group. Prove that if $A$ and $B$ are subsets of $G$ with…

Solution to Abstract Algebra by Dummit & Foote 3rd edition Chapter 2.2 Exercise 2.2.3 Let $G$ be a group. Prove that if $A$ and $B$ are subsets of $G$ with…