Chapter 40 Enlarge and Bold

Busy days always go by very quickly, and February 1st has arrived in a blink of an eye.

Cheng Nuo was busy instructing all the newsboys to sell the popular magazine "People" and try their best to spread their footprints throughout Beiping City.

At this time, Wu Yulin was holding a copy of "New Youth" and reading it while walking. He didn't see the road ahead clearly and focused on Cheng Nuo.

"Hey, hey, it's the tenth day of the first lunar month today, Old Wu. I don't feel like kowtowing to pay New Year greetings. Even if I do, I don't have any lucky money."

"Screw you, I'm obsessed with Mr. Chen's "On Literary Revolution". Who thought I would give you a big gift?" Wu Yulin raised the magazine in his hand: "People's liberal arts are one achievement after another, what should we do?

Progress is slow."

Cheng Nuo quietly tucked the newspaper behind him on the table, fearing that he would be found to be deliberately prevaricating: "Scientific matters can't be encouraged, and there's no rush. Besides, didn't I ask you and Shi Jin to study tricycles? Why did you come here again?"

Already."

"Isn't today the day when the first issue is released? I came here because I care about you. It's enough to have that nerd on the tricycle to study it." He glanced at Cheng Nuo and happened to see Cheng Nuo's little movements. He was a little curious: "Hey, what kind of treasure are you hiding?

Let me see if the triangle is fried. It would be unethical to eat it alone."

As he spoke, Wu Yulin put the magazine under his arm and stepped forward to snatch it.

Cheng Nuo had no choice but to take out the thing hidden behind his back, which was a newspaper.

"Hey, isn't it just a newspaper? What's the big deal? Do you need to hide it?"

Wu Yulin glanced at him suspiciously, took the newspaper and began to read it. The smile on his face became less and less, and finally his face was filled with frost.

It turns out that the war in Germany was tense and they brazenly launched unlimited submarine warfare, not only blocking our waters but also threatening to sink all passing ships.

This warning did not remain on paper. According to later statistics, in just three weeks of this month, 134 ships from non-belligerent countries were sunk by German submarines, causing heavy losses.

"A bunch of losers have been stabbed in the newspaper, why don't the officials take action?" Wu Yulin clenched his fists, veins popped up on his forehead: "Go to protest, break off relations, and beat him!"

Cheng Nuo shook his head: "At present, it seems that they have not taken the next step and are still waiting and watching."

"That's right. The British can't even defeat their submarines, so what can we do with them?"

"Think about it from another angle: Are there more Japanese ships in that sea area, which would give them more headaches."

"If you drive away the wolf and devour the tiger, you will find joy in the misery."

Cheng Nuo came over and patted him on the shoulder: "We should strive for self-improvement. That's why I invited you. If one group doesn't work, just train the next group. You can always see the day of hope. But for now, we still count on you to apply

Make money with the Engineering Science Department to support other departments."

"No, our Academy of Sciences has just finished recruiting people and has not yet been established. When did the Department of Applied and Engineering Sciences come?"

"Just now, hurry up and work hard. The position of dean of the department is reserved for you."

After drawing the pie, Cheng Nuo could finally return to his old profession and compile mathematics textbooks.

The first is the lecture notes on the field theory of this major, which are definitely indispensable in standardized courses.

Some professors in the liberal arts department of Peking University like to give lectures without giving lectures, quoting classics, and cadences. Everyone listens with interest. The final exam depends on the students' notes and whether they are serious or not. There are no textbooks.

Of course, this method is not something that most people can try, so after listening to several teachers' lectures, Cheng Nuo decided to compile a class field theory textbook according to later generations, which will not only facilitate students' review, but also help the dissemination of knowledge.

Secondly, a brief history of algebraic number theory should be compiled to cultivate students' interest.

Mathematics is not an easy course in the first place. Without interest and guidance, it can only be described as boring.

Fortunately, algebraic number theory has not been developed in this world for many years, so the table of contents was quickly compiled, leaving only the filling content.

In order from ancient times to the present, they are ancient number theory, medieval number theory, Gauss's "Research on Number Theory", and Dedekind's "Algebraic Integer Theory". It is clear at a glance to his recent class field theory.

Finally, there is Cheng Nuo's long-term project, which is to compile a "Mathematical Dictionary". He attaches the greatest importance to this work.

It is divided according to elementary mathematics to advanced mathematics, classical mathematics to modern mathematics, and theoretical mathematics to applied mathematics. Try to introduce each mathematical term in plain and easy-to-understand language.

The target users are no longer students at Peking University, but mathematics teachers in various primary and secondary schools. We hope that "Mathematical Dictionary" can become their right-hand assistant.

After all, no matter how hard Cheng Nuo works, the number of students he can teach is always limited, but it is different for thousands of teachers. Facing a larger number of students, if there is the help of "Mathematical Dictionary", the teaching results will be better.

In addition, it can also be placed on students' desks to make it easier for them to resolve doubts.

But this is a big guy after all, and the workload cannot be completed by one person. After Cheng Nuo arranged the outline, he assigned the easy parts to the mathematical talents of the Academy of Sciences and the Mathematics Department of Peking University.

Everyone is adding fuel to the fire, and the first draft is expected to be completed by the middle of the year.

After a few tricks, Cheng Nuo became a leading figure in the domestic mathematics community.

As the days passed slowly by, the American "Annals of Mathematics" sent several telegrams in succession. The contents were basically the same, which was to invite Cheng Nuo to give a lecture.

In fact, it is no wonder that they are so anxious. North American mathematicians have always wanted to hold the World Congress of Mathematicians in their own country, but Europeans do not take them seriously, and their applications have been rejected many times.

In order to bring the World Congress of Mathematicians over, Fields, the founder of the Fields Medal in Mathematics, worked for decades before moving the conference to Toronto, the 7th World Congress of Mathematicians, which was also the first time it was held in Europe.

other countries.

Therefore, even if Cheng Nuo is a yellow man, they still hold their noses and insist on inviting him over in order to increase their influence in the North American mathematics community.

Besides, Cheng Nuo was from Harvard, and he was more happy to have talents from his school, so some minor problems were easily solved for him.

Replying to colleagues' questions is a necessary process, but Peking University is about to usher in a new semester, so Cheng Nuo doesn't want to leave for the United States now and can only answer them in the form of letters.

As time went by, there were more and more homogeneous problems. Cheng Nuo simply compiled a collection of problems and published a paper in the "Annals of Mathematics" to further improve the class field theory.

On the first day of school, Cheng Nuo was dressed in a long robe. He excitedly adjusted his collar at the door, opened the door and entered the classroom.

But when I opened the door, I was dumbfounded. Seven or eight rows of tables were all occupied, and there were even a few people standing in the empty space in the back.

"No, I remember that there are only twelve students in the mathematics department of Peking University. When did Cai Gong recruit new students?"

Take a closer look, why are there still female students? Isn’t it a separate school for boys and girls?

After seeing the teacher come in, the students immediately became quiet and stood up to salute.

"Hello, Professor Tom~"

Cheng Nuo had no choice but to return the gift and carefully wrote a line of words on the blackboard.

"Welcome to Mathland."

Especially the word "paradise" is made bold and large.

Thanks to book friends Al Ah'er and Chang Xiaoshi for the 300 starting coin reward~
Chapter completed!