There are heroes in every era.

Heroes are also needed in every era.

It's just that heroes of different eras show different traits, so they have different characteristics.

The heroes of the war years make people's blood boil, and there are also heroes in the peace years who can compose chapters that can be sung and cried.

If you zoom out on a smaller scale, it's definitely a happy thing to be able to reach your sweetheart's hero.

Yes, Wang Yufei is not so ambitious.

He didn't want to be a hero in everyone's eyes, but it was not bad to be a hero in Lu Yuxin's eyes.

Wang Yufei looked at Lu Yuxin, just as the girl twisted her neck, and a glimmer of light reflected on her fair face.

At this moment, Wang Yufei felt a sudden burst of dizzy happiness in his brain.

"You're so beautiful!" Wang Yufei muttered.

"Hmm, what did you say?" Lu Yuxin tilted her head slightly and looked at Wang Yufei.

The voice was too low for her to hear.

"I said you're beautiful, it's as perfect as Euler's equations! Wait, Euler's equations ......."

At this moment, Wang Yufei's brain seemed to be hit by something, and a series of equations and countless curves unconsciously popped up in his mind.

Without hesitation, Wang Yufei immediately picked up a stone on the ground at random, and quickly wrote the equation in his mind on the ground.

Complex curves were then drawn on the side.

Seeing Wang Yufei's sudden crazy appearance, Lu Yuxin did not make a sound to disturb, let alone interrupt Wang Yufei's movements, but silently took out her mobile phone, turned on the video mode, and aimed at the equations drawn by Wang Yufei on the ground, and various complex curves.

This process lasted a full three minutes before Wang Yufei dropped the small stone in his hand.

About a whole square meter of the ground has been filled with Wang Yufei.

Lu Yuxin switched out of the video mode, took three photos carefully, and made sure that basically every word could be read clearly, and then curiously asked Wang Yufei, who was looking at the formula on the ground blankly, "What is this?"

"Remember that the abnormal critical points of the Riemann conjecture are everywhere? The Riemann conjecture is that the reason why the Gochai has not been proved until now is because the infinitesimal infinitesimal error ε and cannot be eliminated, and this is the problem of infinity, because it is infinite, so it cannot be perfect. ”

Wang Yufei muttered: "But when I saw your appearance just now, I suddenly felt that you were really beautiful, that kind of almost perfect beauty, and then Euler's equation popped up in my head, and then these popped up." What do you think they look like?"

"It's not like a new structure, where all the data is entangled with each other, like these curves, which may seem irregular, but if you follow this equation endlessly, the curvature of these curves will cover everything, and if you pick any point in it, you can find another point on the curve, symmetrical with it. ”

Lu Yuxin frowned slightly, she couldn't fully understand what Wang Yufei was saying, and couldn't help but let out a puzzled voice: "Huh?"

"There's something I haven't figured out yet, but do you see the equation?"

Wang Yufei pointed to the second extremely complex equation he wrote.

Lu Yuxin nodded slightly.

Then Wang Yufei said in a very affirmative tone: "It represents that our universe is a perfect sphere!"

Lu Yuxin did not agree or object, but just looked at Wang Yufei quietly.

At this time, Wang Yufei happened to turn his head sideways and look at her, and the eyes of the two met, which seemed to completely ignite Wang Yufei's inspiration, and at that moment, Wang Yufei seemed to see the entire universe in Lu Yuxin's gaze.

First of all, if we assume that this result is true, and by introducing the fact that the universe is expanding, we can conclude that every point of this perfect sphere is expanding outward at the same rate. ”

"So this is when we need to introduce a concept outside the universe. If the previous assumptions are true, then you think that there are two possibilities outside the sphere of the universe, a dead absolute nothingness, or a single matter evenly packed with the entire outer universe. The third equation negates the first possibility. ”

In other words, there is a substance in the space outside the universe, so what happens when our universe is constantly expanding? The edge of the universe is a fine net, so the density of the matter outside the universe will be compressed, and at the same time, a part of the matter that comes into contact with the surface of our universe may be transformed into our universe and infiltrate into our universe and become a part of our universe. ”

This process continues until the forces supporting the expansion of the universe are exhausted, and then it enters a brief phase of stalemate, after which the extraterrestrial matter begins to expand and our universe begins to shrink. Of course, no one knows how long this process will last, but that's not the point. The point is, I think there is a limit to numbers, and that limit is the diameter of the universe. ”

"Numbers greater than this number are meaningless to our universe, and in the same way, in the field of negative numbers, negative numbers smaller than this number are meaningless. This number will increase as the universe expands, and in the future it will also become smaller as the universe shrinks. ”

Hearing this, Lu Yuxin asked her first question: "Why is this number the diameter of the universe, not the volume of the sphere of the universe?" ”

Wang Yufei thought about it sideways and replied: "Because assuming that my previous analysis is all true, then our current concept of three-dimensional space is wrong, space is not based on the division of points, lines, surfaces, and volumes into three-dimensional existence, but the way points, circumferences, circles, and spheres exist in three dimensions, so all line segments have a curvature, so all line segments eventually form a circle, the difference is that the smaller the curvature, the larger the circumference, and the closer it looks to a straight line at a certain distance!"

"But no matter how we shrink the curvature, the curvature cannot be zero, just as the universe will not become nothingness no matter how much it shrinks in the future. And when the curvature cannot be 0, it also means that π must be irrational!"

"This number also needs to delineate the limits of π in order to make everything unified. Of course, the most important thing is that the distance between the farthest two points is enough to describe the sphere, and for this universe, this number is enough! will interfere with the uniformity of the model. ”

"Wait, that's not the case, well, let's assume that this is true, and suppose that the universe is such a sphere, and that every point of its sphere moves at a uniform speed, then whatever happens inside, as long as there is a force that expands outward, theoretically there must be a force to cancel it out. For example, if we open up a wormhole at point A in the universe, then at the symmetrical position of point A at point B, a reverse wormhole will also be generated?"

"No, no, it's a little bit closer, it's a little bit worse!"

Wang Yufei looked at the formulas on the ground and muttered to himself.

Damn inspiration, why did it suddenly break off?