What is a one-dimensional space? : What do you mean by one-dimensional space, two-dimensional space, three-dimensional space, four-dimensional space, etc.?
Lines are one-dimensional and parameters are points
The polygon is two-dimensional and the parameter is line
There are three-dimensional volumes and polygons with parameters
By analogy, a space made up of volume as a parameter is a four-dimensional space, usually understood as time. A similar claim can be seen in many science fiction novels.
A space made up of time parameters should be a five-dimensional space. In science fiction, it seems to be related to black holes and wormholes. It's hard to understand~~
We humans can only perceive 4 dimensions.
You didn't notice this rule:
One-dimensional things can accommodate so-called zero-dimensional (straight lines are made up of points)
Two-dimensional things can hold one-dimensional 0-dimensional (lines can be points) drawn on paper
Three-dimensional things can hold two dimensions (put a piece of paper in a box)
Then four-dimensional things can naturally accommodate three dimensions. Our human body is three-dimensional. Our world is four-dimensional, why is it four-dimensional? Because our world has four elements: length, width, height, and time.
Are there 5 dimensions? In other words, a medium that can accommodate our world? Then we have to look at what's outside of our world, what's outside of this universe. I do not know!
A study of mathematical concepts of the origin of one-dimensional, two-dimensional, and three-dimensional spaces. Mathematicians want to standardize, stricten, integrate, and universalize metrics, so they define various multidimensional spaces such as one-dimensional, two-dimensional, three-dimensional, and four-dimensional spaces.
A topology branch is generated in it, and you will benefit greatly from the basic GTB. If you read a book on algebraic topology, it will be difficult and time-consuming. If you just want to understand, then look at the popular science book, introducing one-dimensional, two-dimensional, three-dimensional, four-dimensional space and upper-dimensional space. Sometimes suitable scientific books are easy to understand and can introduce in-depth theories, but some professional books are not difficult enough.
Four-dimensional space and above are high-dimensional models.
High-dimensional models, divided into two concepts: mathematics and physics.
In mathematics, there are many multidimensional models. Theoretically, the dimensionality can be very high. There are many models. However, few people are satisfied with the theory of immutability. Therefore, some people think that four-dimensional space is the upper limit of physics. However, it has also been suggested that there will be higher dimensional physical existence. Thinking is good for intelligence because it is bound only by mathematical conditions.
In physics, there are many multidimensional models. Theoretically, the dimensionality cannot be too high. In order to explain the finiteness and infinity of the universe as a whole, multiple dimensions need to be introduced, generally four-dimensional space-time (a pair of relative constituent properties). There are other finite and countable dimensions that may not have many models that can be built in physics. It's hard to think because it's constrained by physical phenomena