Description: Cartesian Product pairs elements from sets; Relations link elements, defining connections between them.

Description: A function shows relationships between variables. Types include linear, quadratic, polynomial, and exponential functions.

Description: Composition of functions combines two functions into one, while invertible functions have unique inverse functions that undo their effect.

Description: Composition of functions creates a new function by applying one function after another. Invertible functions have unique inverse functions that reverse their operation.