I have a crush in my heart, and I find that all the plots in the novel have become reality, and walking is very romantic. This is the state of the two of them at this moment.

Because of "Why Not" and "9420", she misunderstood that Li Xuan had the talent to write songs. She regarded these two songs as Li Xuan's original work and cherished them very much.

In order to avoid forgetting these two songs, she sang them many times, but later she was afraid that she would not be able to remember them, so she picked up her phone and recorded them.

It was noon. After finishing the meal, Xu Lingchu walked out of the restaurant. He held Li Xuan's arm and asked with a chuckle: "Song God, where are you going next?"

Li Xuan looked at her and asked tentatively: "How about we go to the library to study on our own?"

Because he couldn't prove Peng Serie's theorem last night, he is actually still a little troubled. To be honest, the scenery in the world is just like this. Li Xuan has never had the intention to appreciate it, nor can he feel how beautiful the park is. Now for him

It's fun to read.

If you have nothing to do in the afternoon, why not take her to the library.

Xu Lingchu was startled for a moment, then smiled and nodded: "Okay."

Li Xuan was surprised when he heard this answer. He didn't expect Xu Lingchu to agree. He thought she was unhappy and was a little touched.

Of course, the purpose of going to the school library is purely to study, not to torture dogs. The proof of Poncelet's theorem has not been solved, and I always feel that something is missing somewhere in my heart.

After all, two people are still students, and studying together is more meaningful than hanging out together. For students, the library is always the best place to go.

…

…

The school library is naturally open on weekends, and top students who board at the school will spend their weekends studying and reading in the library or electronic reading room. Of course, before going to the library, the two of them sent their dogs home.

When Xu Lingchu came to the school library, he saw many classmates immersed in studying.

She thought that Li Xuan would not be able to bear it when other top students were studying. No wonder he wanted to come to the library. After all, Li Xuan had such good academic performance and must have worked very hard. It goes without saying that there is no one in the world who can read books well without working hard.

of.

For her, Li Xuan was willing to spend time in the park because he already cared about her performance.

For her, she also likes the quiet atmosphere of the library. Books are the crystallization of human wisdom. Coming here can make people feel peaceful.

The library is quiet, you can occasionally hear the sound of people turning pages and walking, but there are very few conversations.

There were not as many people as usual in the library on weekends, so the two of them found an empty seat and sat down.

Li Xuan has the habit of carrying a schoolbag with him when he goes out. The schoolbag contains scratch paper. To prove Peng Serie's theorem, it is enough to have scratch paper.

Xu Lingchu found a literary novel from the Republic of China period from a bookshelf and started reading it quietly.

After reading a few chapters, she turned around and found that Li Xuan was immersed in the problem, still thinking about the geometry problem that looked very complicated, looking like he was thinking hard.

She couldn't figure out why some people were obsessed with math. In her eyes, math was just boring formulas. If it weren't for exams in high school math classes, she wouldn't have listened carefully.

Seeing that Li Xuan was obsessed with mathematics, she was curious about the charm of mathematics. She looked at Li Xuan with clear eyes: "Little genius of mathematics, why do you like mathematics so much?"

From mobile phones, singers, to math geniuses, she likes to give Li Xuan various nicknames, which is very naughty.

Li Xuan was slightly startled, looked at her, and then said, "Mathematics is beautiful."

Xu Lingchu: “But why don’t I think mathematics is beautiful?”

Proving Peng Serie's theorem was more difficult than expected. Li Xuan couldn't prove it for a while, so he put down his pen and chatted with her: "Mathematics is the language of the universe, a language that can be used to communicate with aliens. Aliens may not be able to understand it."

English and Chinese, but you can definitely understand geometric diagrams.”

Xu Lingchu seemed to understand but not quite.

Li Xuan smiled when he saw it: "In the world and in real life, nothing is immutable. The theory of relativity may one day be overturned in the future, and the theories of other disciplines may be replaced by more advanced theories, but in mathematics, pi will never be the same.

Even if it changes, other proven theorems will remain unchanged. This has always been the case. God cannot change the essence of human thinking. This is the charm of mathematics."

When Xu Lingchu thought about it, he found that pi could not change.

Pi is the ratio of circumference to diameter. It is a fixed value that cannot be modified by anyone. If there is an alien civilization, the pi in the alien civilization will be the same as that of humans as long as they are in the same time and space.

Is this the popular understanding that mathematics is the language of the universe?

"Mathematics is the most likely way for humans to communicate with aliens." Li Xuan continued, "If aliens see the proof diagram of the Pythagorean theorem, they will know that there is a civilization on earth that understands the Pythagorean theorem."

Xu Lingchu seemed to understand, and then remembered something, and said with a smile: "As soon as you said it, I remembered it. I remember a popular science film that said that the Pythagorean theorem pattern was painted on the spaceships launched by humans out of the solar system.

, this is to tell aliens about the existence of human civilization, right?”

Li Xuan smiled and said: "Yes, not only can geometric diagrams be used to prove the existence of earth civilization, scientists can also use radio telescopes to emit binary digital signals. This is also a way to communicate with aliens. If aliens can decipher binary,

You can know a lot of information, such as the location of the earth, the chemical element number of DNA, the composition of the solar system..."

"Binary signal? How can it represent so much information?" Xu Lingchu couldn't figure it out.

"Because after deciphering, the binary can be converted into patterns." Li Xuan roughly explained, "Mathematics will not deceive people anyway, it is intuitive and accurate. For ordinary people, it may be enough to know addition, subtraction, multiplication and division in mathematics, but if you want to know the details of the universe,

It’s complicated, and it’s difficult to move forward without mathematics. The more you understand it, the more fascinating you find mathematics.”

Xu Lingchu nodded.

She is very yearning for the universe. Everyone has this complex. When she was a child, she liked popular science astronomy videos. Of course, she only liked simple science videos such as astronomy videos. She was not interested in complex theories. She was considered a pseudo-physics fan. This is not

It prevents her from admiring scientists.

She thought Li Xuan was very charming when he told it. She thought about it and said jokingly: "But I think most people don't seem to be very interested in mathematics, physics, and other science subjects. It doesn't seem to be as charming as you said."

"There's a reason for that."

"What reason?"

"Want to hear the truth?"

"Um."

"The main reason is that people with high IQs are in the minority after all."

Xu Lingchu was slightly startled, then realized what he was doing, raised his snow-white neck, and said angrily and funny: "Damn it, are you saying that my IQ is low and that I don't like mathematics very much?"

"No." Li Xuan was amused and said, "But that's the fact. People who are good at mental arithmetic can calculate the answers to multiple-choice questions in physics and mathematics, but some people can't even remember the relationship formulas of tan, sin and cos.

."

"It can't be said that I have a low IQ, it's just that I didn't study seriously." Xu Lingchu had a different view.

Li Xuan really couldn't refute.

Because being strong in mathematics is mainly about logical thinking, and logical thinking is the most critical factor in determining the level of IQ. Being good in mathematics often means having a high IQ, but conversely, a high IQ does not necessarily mean you are good in mathematics. It may be that you have not put in the effort to learn.

Xu Lingchu smiled and said: "Future mathematicians, what will you do if one day mathematics is kicked out of the college entrance examination? I read a survey online and said that 70% of people hope that mathematics will not be taken in the college entrance examination. Maybe they will be kicked out.

What about taking the college entrance examination?"

"No, even if English and Chinese are kicked out of the college entrance examination, mathematics will not be kicked out."

"Why?"

"Mathematics is the language of the universe, and science is the source of human progress. Unless the country does not want development and only cares about entertainment, it is impossible not to take the mathematics test." Li Xuan was confident.

"But I think physics is the driving force for human progress. Electricity and mechanics affect the progress of human society. I can't imagine what would happen to humans without electricity."

"Mathematics is a tool."

"tool?"

Li Xuan nodded and smiled.
Chapter completed!