Adjoint functor
Okay, imagine that you have two big boxes filled with toys. One box is called "Functor A" and the other box is called "Functor B". Now, each toy in box A has a special tag on it that says where it should go in box B. This means that every toy in box A has a best friend in box B!
But, some toys in box B don't have a best friend in box A yet. This is where the Adjoints come in. They help find new friends for the lonely toys in box B by looking for toys in box A that could be their best friends.
Basically, Adjoints are helpers that make sure all the toys in both boxes have a best friend in the other box. They work together with functors A and B to make sure everything is balanced and everyone is happy!
But, some toys in box B don't have a best friend in box A yet. This is where the Adjoints come in. They help find new friends for the lonely toys in box B by looking for toys in box A that could be their best friends.
Basically, Adjoints are helpers that make sure all the toys in both boxes have a best friend in the other box. They work together with functors A and B to make sure everything is balanced and everyone is happy!