Jet (mathematics)

A jet in mathematics is a way of keeping track of how things change. Imagine you are drawing a picture and you want to know how the picture changes when you move your pencil a little bit. A jet is like a special tool that tells you exactly how the picture changes in a very organized way.

Think of a jet like a recipe book. The recipe book has a list of ingredients and instructions on how to cook the food. Similarly, the jet has a list of how much things change and instructions on how to combine them.

For example, let's say you have a point in space, and you want to know how the point moves when you move it a little bit. A jet will keep track of how much the point moves in different directions, and how it changes if you move it in more than one direction at the same time.

Overall, a jet is a really helpful tool for mathematicians who want to understand how things change. It's like giving them a superpower to see things that are too small to see with the naked eye.