However, Hilbert's letter caught Li Yu off guard. Kenjiro Yamakawa, President of the University of Tokyo, asked again: "Have you always been in contact with Professor Hilbert and other great European scientists?" Li Yu shrugged: "Yes, it is indeed a lot more convenient now that the telegraph is available. I gave it to Lord Kelvin before. It takes more than a month to write a letter back and forth." These two are now leading figures in physics and mathematics. Kenjiro Yamakawa took a breath: "You are really not an ordinary person, you can keep in touch with them!" Nagaoka Hantaro He asked curiously: "What article are you going to write for Professor Hilbert?" Li Yu touched his chin: "I haven't thought about it yet. How about we calculate a few more solutions to the Riemann function first? After all, this is One of the 23 mathematical problems he raised himself. Although it is not a solution, no one has seen what the solution to the Riemann function looks like." Hantaro Nagaoka smiled and said: "That day you asked the students to solve this mathematics. As for the topic, I didn’t know what the Riemann function was at the time, but after a little research, I realized how difficult it was. You don’t know, that student asked for help everywhere and didn’t even have a clue.” Li Yu said with a smile: "I just made a little joke." Nagaoka Hantaro said: "The little joke Mr. made is so mathematical. Not to mention a student, no one in the entire Tokyo Imperial University Faculty of Science can understand it." Li Yu tasted a few more I drank a bowl of matcha and chatted with them for a while before leaving.
I originally wanted to learn tea ceremony, but the process was really too complicated. I had to wait for a long time to drink a bowl of tea, which really felt like a waste of time.
——Sure enough, this kind of thing is still suitable for people who have time and money to enjoy it. Li Yu has already begun to miss the Chinese Gaiwan tea. It is simple and easy to brew, which is suitable for a fast-paced person like him.
Of course, even Chinese loose tea now has a lot of particularities. But no matter how particular you are, compared with the matcha tea ceremony, it is much easier.
Back at his residence, Li Yu spread out the paper and continued to calculate the solution of the Riemann function. The mathematics that Li Yu knows is basically not that advanced, or is closely related to physics. After all, he is not a pure mathematics student.
But fortunately, Riemann's mathematics and physics really have many connections. To put it bluntly, without Riemann's mathematical work, the theory of relativity would have no theoretical basis for its birth.
Einstein used Riemannian geometry in non-Euclidean geometry, otherwise his wonderful physical ideas would not have been deduced at all.
However, even Einstein himself did not fully understand Riemannian geometry, and he consulted professional mathematicians on many mathematical problems.
After all, the mathematical foundation of physicists at the beginning of the 20th century is really incomparable with the physics of later generations. It’s not that physicists at this time were really bad at mathematics. The reason was actually mentioned before: Physics today is still dominated by experimental physics. There are not many people studying theoretical physics, and it has not become mainstream.
Einstein and Planck can be regarded as key figures in pushing theoretical physics to its peak. As for experimental physicists, they don’t even pay much attention to theoretical physics, so why would they pay special attention to more abstract mathematics.
So even if Ai Dashen and Pu Dashen took the path of theoretical physics and grew up in that environment, in many cases they would only study specifically after actually using mathematical tools.
Later generations of higher education have already figured out the mathematical tools needed for physics, and they are all learned simultaneously, making them easier to use.
It can also be regarded as the predecessors planted trees for future generations to enjoy the shade. Li Yu is best at quantum mechanics and astronomy. In fact, from the birth of the theory of relativity until the 21st century, there have been relatively few people studying the theory of relativity. This is not to say that it is not important, but that Einstein has almost completed the theoretical framework, but experimental verification is too much. It's difficult, the accuracy requirements are too high.
That was a real tinkering job. Needless to say, there are many. If you look at the awarding situation of the Nobel Prize in Physics, you will know: basically half of them are awarded to quantum mechanics, and almost half of the remaining half are awarded to astrophysics.
Basically, these two things will almost wrap up the Nobel Prize in Physics! But the theory of relativity is an important elective course after all, and I once calculated the Riemann function in my spare time.
If Li Yu wanted to, he could even have the special theory of relativity come out in advance, but it really doesn't make much sense, because as we all know, the special theory of relativity has many flaws and great limitations. What is really important is the later general theory of relativity.
Einstein himself said that even if he had not proposed it, someone would have proposed the special theory of relativity within five years.
But without him, general relativity would not have been developed for fifty years. Because the speed of light is the maximum speed limit for motion, Maxwell had actually studied it long ago.
Minkowski also worked out the four-dimensional space-time theory of three dimensions plus time, but the two did not unite.
Let’s talk about the Riemann function. Although a Danish mathematician Gram will give 15 solutions for the first time half a year later, there are errors, and some of the errors are a little bit big.
But after all, the calculation is done by hand, which is already very complicated. If you just list a solution, you will know how difficult it is to calculate by hand: 1\/2+The Riemann function itself is complex enough. To understand the function itself, you need to have advanced mathematical knowledge. , there are so many digits after the decimal point when calculating, my scalp goes numb just thinking about doing it by hand!
Li Yu truly admired Gram's willpower. But Li Yu is so smart, that’s what calculators do!
For people in the 21st century, the brain should not be wasted on such time-consuming and troublesome calculations!
But even with the blessing of an artifact like a calculator, it took Li Yu a whole morning to calculate the twenty solutions.
I feel like this is enough for the time being. Papers with relatively large numbers like this can be sent by telegraph, but sending long-distance telegrams is really expensive.
Sending such a telegram in its entirety would probably cost a few hundred taels of silver if the commercial quotation was used.
Therefore, it is not a good idea to bother Tokyo Imperial University with this kind of thing. Li Yu is going to go to the Qing Embassy in Japan to ask first. If they don't agree, he will talk.
As soon as Li Yu arrived near the embassy, he saw many Chinese students blocking the embassy. The international students kept shouting slogans.
Li Yu originally thought it was an anti-Russian movement, but the slogan actually said: "Give back our country's rights!"
"Allow me to enroll!"
"Do not interfere with students' admission!" The door of the embassy was always closed. Many students even built a human wall to climb in, but were stopped by the Japanese police.
The students were even more indignant when they saw the Japanese police: "This is China's own business, and the Japanese have no right to intervene!" Li Yu couldn't see what was going on, and happened to find Brother Xun and others there.
Not only Lu Xun, but also at least two hundred students from Hongwen College were present. Li Yu stopped Lu Xun: "Brother Xun, oh... Mr. Zhou, what happened here?" Lu Xun turned around and found that it was Li Yu, so he said: "It turned out to be Mr. Li, didn't you know? Students are protesting in Chengcheng School refusal trends.”
"Rejecting school?" Li Yu still didn't know what was going on. Lu Xun then explained: "It's like this. Chengcheng School, like our Hongwen College, is a school for students studying in Japan. But they are somewhat different from us. Our Hongwen College will go to ordinary universities in the future, while Chengcheng School After graduation, I went to the Army Sergeant School. What happened this time was that nine international students wanted to enter Chengcheng School, but were rejected." Good guy, it turned out to be the preparatory school of the Army Sergeant School.
The number of big names coming out of this school is no less than that of the Hongwen School where Lu Xun attended. Of course, those who come out of Chengcheng School are basically military veterans.
This Chengcheng school will soon be renamed Zhenwu School, which is the school where Principal Jiang attends.
However, Principal Jiang himself was not admitted to the Army Sergeant School after graduating from Zhenwu School. However, people feel that it is a bit embarrassing to tell them. Zhenwu School only has a middle school diploma at best. How can you be the principal of Whampoa Military Academy?
And Principal Jiang’s fortune is absolutely inseparable from Whampoa Military Academy. So Principal Jiang spent 50,000 yuan to bribe Liu Zongji, the head of the sixth class reunion of the Japanese Army Sergeant School, and asked him to add his name to the class reunion list, thus forging his academic qualifications.
In order to make people more convincing, I found two genuine students from the Army Academy and took them with them to various occasions, just to make him lie everywhere. They told everyone they met that they were indeed classmates from the Academy. If you don’t believe it, look at it. Two witnesses!
Although historians later exposed the lie through research, Principal Jiang's position had already been established by that time and he didn't care.
It’s all a routine! I really don’t know if I learned this trick from watching "Fortress Besieged" and following Fang Hongjian. Li Yu asked: "Why does Chengcheng School refuse students admission?" Lu Xun said: "Sir, I don't know. The Hongwen College I went to is a private school, and everyone can sign up at will; but Chengcheng School is a preparatory school for the Army Sergeant School. , only publicly funded students recommended by the minister in Japan can enroll." Li Yu generally understood: "In other words, these nine people are self-funded students, and the minister did not issue them with admission certificates?" Lu Xun nodded: "That's it. . In fact, not only Japan has similar public opinions, but even the embassy in Japan believes that public-funded students are more secure, and most of them don't like self-funded students." Li Yu said: "It doesn't sound like it has much to do with Hongwen School, right?" Lu Xun said: "It really doesn't matter. You guys didn't know about this incident at first, but suddenly I heard that Minister Cai Jun actually mobilized the Japanese police to suppress the students, and even forcibly sent the two leading students Wu Zhihui and Sun Kui back to the country. And Wu Zhihui fought hard in the Japanese Imperial Palace The moat jumped into the river, and everyone knew that such a big thing had happened. The Japanese bullied others too much!" In fact, to put it simply, this minister Cai Jun does not know how to handle things. Small things make big things happen. I really don't know how he became a minister.
Over there, the Japanese Minister in China has joined forces with the Black Dragon Society and the spy chiefs to start espionage work. The Qing Minister in Japan is still playing low-end housekeeping here, which is really disappointing.
Li Yu asked: "Is that classmate Wu okay?" Lu Xun pointed to the most excited person in front: "That's him." Li Yu said: "Fortunately, no one was killed." Wu Zhihui did live well, and later became Principal Jiang's right-hand man.
At this time, Wu Zhihui was taking the lead in shouting: "It is better to lose knowledge than lose reputation!" Behind him, many students from Hongwen College were also shouting: "If this is not solved, we will also drop out of school!" Seeing the excitement among the crowd, Li Yu asked Lu Xun: "You don't really want to drop out of school, do you?" Lu Xun said: "The International Students Association has held urgent discussions on this matter, and the result of the discussion is that it is planned to suspend classes until the matter is settled; if there is no settlement, it is not too late to drop out. "Li Yu sighed: "Although everyone is filled with righteous indignation, it is too radical. If you really drop out of school, the loss will be too great. Now that the national situation is like this, you should know how to endure humiliation and bear the burden. If you threaten to drop out of school, how can you learn well? After all, it is to serve the country. The time has not come yet." Lu Xun was sober, but he pointed at Hu Hanmin in front and said: "Although I think so too, I can't resist what they will do." Hu Hanmin led a group of people with a very loud voice: "Oppose the Qing Dynasty Government, oppose the Japanese government! Drop out of school! Drop out of school!" He is the leader of Guangdong students, and there are many people who follow him.
After all, Hu Hanmin was a professional in politics, and his organizational leadership ability was a hundred times better than that of Lu Xun. Dozens of people below him were so angry that they wanted to drop out of school immediately.
When things were getting tense, someone shouted: "Stop arguing, Mr. Liang from "Xinmin Congbao" is here!" The student was immediately attracted: "Is it Mr. Liang Qichao?"
"Great, someone is here to seek justice!" It was Liang Qichao who came. Liang Qichao's appeal goes without saying. He glanced at the students and said loudly: "Students, please return to school quickly and don't act impulsively! You can resort to the press and use the correct tools of public opinion to fight against the embassy and the Japanese government. , our "Xinmin Congbao" will open up avenues for students to express their opinions! So please don't act out of anger today!" Now "Xinmin Congbao" is the strongest Chinese newspaper in Japan, and with Liang Qichao in charge, its combat effectiveness is very strong.
The students calmed down slightly after listening to Liang Qichao's words.
"Mr. Liang is saying that we must learn to fight. What are you reading so many books for? Go back and practice your writing!"
"Yes, let's go back and write the manuscript!"
"Just like when Mr. Yang Lian wrote his suicide note, we must write something decent first before we fight!" Seeing this, Lu Xun also said to Li Yu: "Sir, I'm going back to school." But Li Yu knew what Lu Xun The combat power of everyone present combined could not match Lu Xun's pen, so he asked: "Lu... Mr. Zhou is going back to write an article?" Unexpectedly, Lu Xun shook his head: "No, I want to go back to study!" That's right, my current dream is to be a doctor.
Historically, although Lu Xun did experience the trend of enrolling in Chengcheng, he only recorded it in his diary.
Moreover, the sharpness of his writing at this time was incomparable to that later, and the diary he wrote was simply a running account.
After the students left, Li Yu stepped forward and said to Liang Qichao: "Mr. Ren, I have admired you for a long time." Liang Qichao looked at Li Yu and said, "Who are you?" Li Yu said, "I am Li Yu." Liang Qichao opened his eyes wide: "It turns out. Are you Li Yu? Master Kang mentioned to me that he is also a great talent who understands the truth of the universe like him." Li Yuzhen didn't know whether Kang Youwei was scolding him or praising himself, so he smiled bitterly and said, "Thanks to Mr. Kang for the compliment. "Li Yu thought to himself, this Kang Youwei would not really be so arrogant that he thought he
Have you “understood the truth of the universe”? Well, isn't that a magic stick... Anyway, Li Yu has never seen any truly knowledgeable person say that.
The more knowledgeable a person is, the more he feels that he knows nothing. Liang Qichao invited Li Yu to his "Xinmin Evening News" newspaper office. Liang Qichao saw the manuscript in Li Yu's hand and asked, "Is that a manuscript that you are holding?" Li Yu said, "Yes, it is a mathematics paper I am going to write for the University of Göttingen in Germany." ." Liang Qichao said: "Can you give me more details?"
"Of course." Li Yu handed it over. Liang Qichao was immediately confused when he saw the dense numbers.
"Sir, he is really talented and can do such complicated calculations. To be honest, I have read many Western works in the past few years, and I also know the significance of the Western Industrial Revolution, so I have also read books about science, but It is difficult to understand its meaning at all, and I even thought that it was not something that Chinese people could understand." Of course Liang Qichao would not brag like Kang Shengren.
Kang Youwei often said that he
"Eight-year-old has a photographic memory"
"A teenager is knowledgeable about the past and the present", but he took the exam three times to become a scholar. But Liang Qichao was a real child prodigy. He became a scholar at the age of 11 and won the imperial examination at the age of 16.
When Liang Qichao went to seek apprenticeship with Kang Youwei, Kang Youwei was still a scholar, and it would be many years before he won the imperial examination.
"Skills only have specializations," Li Yu said, and then mentioned what happened just now,
"Thanks to the arrival of Mr., a storm was eliminated." Liang Qichao said: "The storm has not passed yet, but we cannot let the students rush to the front. They are the hope of the country. If they make the matter bigger, the court will stop sending students because of this. If we study abroad, we will be stuck in our own ways again, and we will hurt ourselves." Li Yu nodded, it was really possible for the people in the Qing court to do such a thing.
After all, there are many anti-Qing organizations in Japan now, and they are also afraid of students
"Bad learning". Li Yu said: "Young people are inevitably impulsive, but what they think in their hearts must be good, but their methods are wrong." Liang Qichao sighed: "Yes, I really don't want them to make the same young and impulsive mistakes I made back then."
