Question 5 about dimensions, questions about dimensions

A mathematically abstract multidimensional space is different from a physical multidimensional space.

According to one of the superstring theories, it can be deduced that the world has 11 dimensions, and each dimension has its physical meaning, and some meanings are very abstract and difficult to understand and difficult to imagine. The universe is not only as mysterious as we think, but even more mysterious than we think!

Generally speaking, but the 5 and 11 dimensions should be condensed to the point that it is difficult to observe, and only 4 dimensions are true, so only these 4 dimensions can be perceived.

Intuitively it is possible to brag like this:

Zero-dimensional: point. One-dimensional: The line --- truncated line is a point.

2D: Faces --- cut off a face is a line.

Three-dimensional: The three-dimensional --- truncated body is a face.

Four-dimensional: space-time--- intercepting space-time is a three-dimensional.

Five-dimensional: x (name it whatever you want) -- Truncating x is space-time. Six Dimensions:

Some popular science books on the frontier of physics and some science fiction, such as "Across Three-dimensional Space" and the like, those scientists and **families use their imagination and words to try to describe the appearance of high-dimensional space for you to see. If you are interested, you can take a look, to understand the eleventh dimension, you must have a rich imagination!

I've seen something ......But don't take it too seriously......

That is, ......Time is also not linear, all the way forward, the same speed, etc....Therefore, the so-called "four dimensions" is only three dimensions of space + one dimension of time with the support of this theory. ps, upstairs is right, one dimension is a line, so it is inferred that the fifth dimension should be three-dimensional space + two-dimensional time, that is, time in three-dimensional form, etc., and the latter is not clear.

Dimensionality can be used in mathematical proofs and calculations (matrices), or in real life, but not in words. Because people can't understand things that are more than three-dimensional, just like we can see things that are flat, and things that are flat can't understand us, and we can't imagine what we look like!

This is just speculation, three dimensions plus time is four dimensions.

A weft is a point? It should be a line!

Physics Questions! You just remember the first three dimensions, and the back ones are useless.

That's just a mathematical dimension.

Hey, it's clear that the reasoning is 13 dimensions.

To pique your interest.

An array of several dimensions, whether it is several dimensions, is one-dimensional continuous in memory, just like a ruler is divided into, meters, decimeters, and centimeters.

So the separate kind of occupation will be greater than or equal to multi-dimensional, and if the small dimensions cannot be aligned, it will occupy more memory.

For example: char [10][10], 100 bytes 10 char[10], in some cases 120 bytes.

Dear Lenovo users, hello!

This is man-made damage and is not covered by the warranty.

It is recommended that the service station be viewed by the engineer, and the specific situation shall be subject to the actual inspection by the engineer of the service station.

IDEA Forum.

Think Forum.

Lenovo Community.

Vitamins are divided into two categories: fat-soluble vitamins (such as vitamin A, vitamin D, vitamin E, vitamin K, etc.) and water-soluble vitamins (such as vitamin B, vitamin C, vitamin PP, folic acid, etc.). All kinds of vitamins have their own unique effects in beauty and skin care.

#include ""

#include ""

#include

using namespace std;

void matrixchain(int* p, int n, int m[7][7],int s[7][7])}

void traceback(int i,int j,int s[7][7])

int main()

Your **c pointer can't use new *c pointer can be new so if there is an error, just use the array on it.

I've compiled it above, and it's definitely passable.

1. It is best to add the heat exchange station and water pump room to the bureau Weili, which is better to make a low-pressure meter. 2. The rest can be put into the self-Weili and paid by the property. 3. The equipment and property of institutions such as Unicom are separately metered and collect electricity fees by themselves. Check out the original post" to adopt.

The redim statement in VB has the following prerequisites for changing the dimension and type of an array.

You can use the redim statement to repeatedly change the number of elements and dimensions of an array, but you can't use redim to change an array to another data type after defining an array as a data type, except for searching.

variant. If the array is indeed contained in a variant and no preserve is used

keyword, you can use the as type clause to change the type of its element, but in the case of this keyword, it is not allowed to change any data type.

If you use the preserve keyword, you can only redefine the size of the last dimension of the array, and you can't change the number of dimensions at all. For example, if the array is one-dimensional, you can redefine the size of that dimension, because it is the last dimension and the only one-dimensional. However, if the array is two-dimensional or more-dimensional, you can only change its lastmost dimension while still retaining the contents of the array.

The following example shows how to increase the size of an existing dynamic array in its last dimension without purging any of the data it contains.

2,5D is a kind of perspective between 2D and 3D, that is, the 2D perspective is completely locked, and the 3D perspective is unlocked and can be changed arbitrarily, and it is in between, a certain angle of view can be changed, but it cannot be unlocked.

You have noticed that gravity and gravity are two completely different concepts from the gravity dimension and the gravitational dimension. The former represents force, while the latter represents dimensionality. So, in my opinion, gravity is a component of gravity (the other component is the centripetal force) and it has little to do with the gravitational dimension and the gravitational dimension.

At present, the accepted theory in the physics community is that there is an eight-dimensional space, which is divided into x-dimensional (the length of the object), y-dimensional (the width of the object), z-dimensional (the height of the object), t-dimensional (the time dimension), the velocity dimension, the temperature dimension, the electromagnetic force dimension, and the gravitation (or repulsion) dimension. According to the M theory (a type of superstring theory) proposed in the 90s, the universe is eleven-dimensional and consists of a vibrating plane. For Albert Einstein, the universe is only four-dimensional (three-dimensional space and one-dimensional time), while modern physics says that there are seven dimensions of space that we cannot see.

How do scientists explain the difference between the dimensions we already know and those that may exist but are not? They made an analogy: an ant walks on a piece of paper, and it can only walk right or left, forward or backward.

Neither high nor low means to it, which means that the third dimension of space exists, but it is not recognized by ants. In the same way, our world is made up of four dimensions (three spatial dimensions and one temporal dimension), but we are not aware of all the other dimensions. According to physicists, there should also be 7 dimensions.

Although there are so many dimensions, these dimensions are invisible, they are wrapped up in each other and are called compressed dimensions. To clarify this perception, let's take the ant as an example of our imagination. We can imagine rolling up the piece of paper on which the ant walks until it forms a cylindrical shape.

If an ant walks along the wall of paper, it will eventually return to the starting point, which is an example of a compressed dimension. The above phenomenon also occurs if you can walk along the famous Mebius, of course, it is 3 dimensions, but if you walk along it, you will always return to the starting point. The Mebius belt is compressed from the perspective of dimensions, according to physics, it has three dimensions, but whoever walks on it can only recognize one dimension of people.

It's a bit like the guy on the left: up or down, but never to the end. If the ant does not walk along the curved wall of the paper tube, it will never return to its original starting point.

This is the example of two-dimensional (or the kind of dimension that we perceive), and if we follow it all the way, it is impossible to return to the original starting point.