👉 In mathematics, a centralizer is a concept that refers to the set of all elements in a group or ring that commute with every element. This operation is often used in the context of groups and rings to find the smallest generating subset for a group. It's important to note that this definition is not limited to specific mathematical structures but can be applied in any setting where one might want to understand the structure of elements within a given set, such as in algebraic geometry or number theory.