Commutative diagram

A commutative diagram is like a map that tells you how different things relate to each other. Imagine you have a bunch of toy cars and you want to line them up in a specific order. Each car has a number on it from 1 to 5. You want to arrange them so that the number 1 car is at the beginning and the number 5 car is at the end.

You can draw a commutative diagram to help you remember which car comes next. The diagram has arrows that show the connections between each car. For example, the number 2 car will always come after the number 1 car because there is an arrow pointing from the number 1 car to the number 2 car. Similarly, the number 3 car will come after the number 2 car because there is an arrow pointing from the number 2 car to the number 3 car.

The cool thing about a commutative diagram is that it tells you the same thing no matter how you look at it. If you start at the number 1 car and follow the arrows, you will always end up at the number 5 car. Even if you turn the diagram upside down or sideways, the relationships between the cars will stay the same. It's like a secret code that you can use to figure out how different things are connected.