What do you imagine the existence of 4 dimensions world？ Living in 3 dimensions world makes it difficult to picture the world. In fact, we can image the world. Understanding 4 dimensions would be very difficult, so suppose that we are residents of 2dimensions world. When we see something, the world is recognized as 1 dimension. If you meet a 3 dimensions object, you can see a world which magic(witch makes) is available.
[Definitions of magic]
1. Magic energy is produced without real energy and objects.
2. Magic in this essay is defined a defined a fictional energy in the fictional world like those in light novels, RPG games and anime.
[Chart1]
One of the most important things of this example is that magic energy appears suddenly from an empty space and disappears from it. This phenomenon express 4 dimensions object`s activity.
When we imagine the operation of raising dimensions, we can express it as integral. In math world, raising dimensions means adding variables to a formula. (Detail: chart2)
[Chart2]
When you a function like ①, the function express 4 dimensions world. You did it!
(|y|=|z|=|t|=|x|, a≦x≦b)
I'm sure that you won't draw ① graph before reading this essay, because you have never experience a 4 dimensions world. However, you can express the world using the logic(Detail: chart1) as a movie not a picture. This chart is drawed like below.
