Go back to the past and be a schoolboy

Chapter 91 I Patch Myself

With the efforts of the editors of "New Youth", it was sold in 43 distribution offices in 94 provinces and cities in China, and the circulation reached a peak of [-] copies at one time. The banners of Mr. De and Mr. Sai swept across the country, and many Aspiring young people began to wake up one after another, and Peking University became the "sacred place" for this generation of young people ahead of schedule.

On the campus of Peking University, a group of students are surrounding Wen Yin who is standing on a high platform, reading an article in "New Youth" with great voice and emotion.

"Students, look at what Mr. Jerry said, every sentence is deafening, please allow me to excerpt a few sentences for you to read."

"If there is only one window now, I hope to keep it open forever, not to lose passion and hope."

"I'd rather be miserable, I don't want to be numb, I don't want to know nothing about myself, and be satisfied."

At the end of the reading, Wen Yin roared with almost all her strength, her petite body contained enormous power, and the lingering sound echoed throughout the campus, making all passers-by stop and look sideways, wondering what kind of strange woman she was.

At the Liujiao Pavilion not far away, Mr. Chen was sitting on a bench with his legs crossed, feeding the koi in the pond without haste.

Cai Yuanpei glanced at him, then turned back and continued to look at his documents: "Zhongfu, "New Youth" has done a good job this time. School youths who have not entered the society must also be engaged in various studies to prepare for their future entry into the world. If you are Mr. De and Mr. Sai, two good teachers and helpful friends, there is no room for mental vacation, and your outlook on life will often fall into the realm of pessimism and world-weariness, especially for those who are not ambitious."

Mr. Chen smiled, showing his characteristic big white teeth: "I don't think as much as Cai Gong. I know the fate of the world, so I can have no regrets. Since I founded "New Youth", I will do it to the best of my ability." , It is worthy of the original intention, and now it seems that it has lived up to the hopes of me and Zhiyuan, especially his article, which exploded in this pool of water like a thunderbolt."

Wrap all the cornbread scum in your hands into dough, and slam it into the pool. The originally relatively calm stagnant water stirred up a huge splash, and the lotus leaves swayed accordingly.

"Some fish will be frightened and panicked, like a bereaved dog, while some fish have a strong appetite and will not give up any hope of life. They can even jump over the dragon's gate with the help of water splashes. The magazine is a success." Mr. Chen clapped his hands, stood up and cleaned up the debris on his body: "As for those duckweeds and aquatic plants, let them go."

Cai Yuanpei dipped some ink, and reviewed the document at hand: "You, you were asked to move the editorial office to Beijing a long time ago, but you refused to do so at the beginning, and now you are playing charades with me. Guy. By the way, don’t forget that you are still the dean of liberal arts at Peking University. Zhiyuan is a good person, but he is more outstanding in mathematics. Don’t lead him astray, or don’t say that I can’t forgive him. You, Professor Feng, are not easy to explain."

Mr. Chen smiled, stroked his hair to avoid answering, pinched his waist with one hand and pointed at the distant assembly, squinting his eyes slightly: "Mr. Cai, do you think that the women of our Peking University will be so tough in the future? Let me tell you, this woman opened the ban well, it's wonderful!"

After hearing this, Cai Yuanpei shook his head helplessly, put down the brush, and looked at the distance side by side with his hands behind his back: "Create a complete personality, and men and women are the same. In front of Mr. De and Mr. Sai, you will not give preferential treatment to anyone just because your surname is Chen and my surname is Cai. And I won't favor anyone just because I'm a man or she's a woman. It's just that even though I'm the daughter of an old friend's family, I still don't like women."

There is obviously something in these words, and there are even some secrets that ordinary people don't know. Mr. Chen's heart was tickled, and he smiled sideways: "Cai Gong, it's a shame to learn and sell now."

Cai Yuanpei laughed heartily: "It is said to be a man and woman, but it is actually a person. I heard that your two children have come to Beijing. How is the relationship between father and son?"

"Hey, anyone is my seed, admit death, take your time."

In the courtyard, Cheng Nuo is busy finishing the finishing work of the "Concise Mathematical Dictionary". There has been news from Tianjin that the braided army has begun to gather, and it is possible to break into Beijing at any time for restoration. Therefore, he needs to make good use of this time to avoid future Another variable.

At this time, there was a knock on the door, and when he opened the door, it was Ye Qisun, whom he hadn't seen for a long time, carrying two boxes of snacks with his bag cross-body.

"Excuse me, is this the home of Professor Cheng Nuocheng of Peking University?"

Wearing a student uniform, it is hard to hide his bookish anger, but even so, Li Laosan said politely: "Yes, may I ask who are you, Mr. Xiao, and what can I do with my husband?"

"Master, I'm a student of Tsinghua University. I know Professor Cheng. I'm looking for him this time to ask him some math questions. Please let me know."

"Oh, oh, I see, you are also my husband's student, so please wait at the door first, I will see if my husband is there." There are too many people visiting now, and there are still many Li Laosan He was careful and didn't rush to agree, who knows if his husband recognizes him or not.

After learning about the situation, Cheng Nuo put down the pen in his hand and was very happy: "So it's Qisun, hurry up and invite him over."

As soon as he finished speaking, Cheng Nuo felt that something was a little bit inappropriate. As soon as he finished speaking, Mr. De set up a score on his side. It didn't make sense, so he stopped Li Laosan, who had already crossed the threshold with half a foot: "Forget it!" Come on, Lao Li, let me go with you, this is my little friend, if he comes to the door in the future, you don't need to inform him, just invite him over."

However, Ye Qisun was still a little nervous when he saw Cheng Nuo greet him in person, holding his backpack tightly: "Hello, Professor Cheng, I'm sorry to bother you, but I went to Peking University a few times, but I didn't see you, so I came here." The worst policy."

Cheng Nuo stepped forward to lead him in, and said with a smile, "It's the end of the semester, and my class has long since ended, so it's normal if you don't see me, this is not a busy time, just take some time off and do some things of your own."

"I said, I was confused." Ye Qisun smiled a little silly after hearing this, but after laughing, he suddenly remembered that he was carrying something in his hand, and said quickly: "This is the dim sum I bought at Yongxing Zhai at the altar outside Chaoyangmen. I don’t know what you like, but the gentlemen who watched Tsinghua liked this Saqima, so they bought some for you to try along with the public.”

There are not many things, but it is enough to show the visitor's heart. Cheng Nuo smiled and said, "It's just the beginning of the month. It's not easy for you Tsinghua students to have some pocket money. When you leave, take it home and share it with your classmates. Next time Don’t do it again next time.”

But Ye Qisun obviously has his own opinion, and insisted on putting things down after agreeing not to be an example: "The ancients often say that one day is a teacher and a lifelong father. Professor Cheng, although we don't have the name of teachers and students, but we are teachers and students. Others offer at least three Master Respect Tea, I only have two boxes of snacks, which is a huge advantage, and there is no refund."

No wonder he was able to teach so many talented people later on. At this moment, his eloquence was already perfect, so Cheng Nuo had no choice but to accept the snacks, keeping one box for himself and one box for Li Laosan.

Just looking at the name, Saqima may think it is imported food from the West, but it is actually an authentic local snack, because the last two processes of this pastry, fried short noodles, are coded (bonded) and then cut into cubes .Qie, the Manchu pronunciation is "Saqifei", and Ma, the pronunciation is "Mala Mubi", together they are called Saqima for short.

Although it is a Manchu delicacy, it was quickly assimilated, and later spread to Guangdong and Jiangxi. People replaced the traditional rock sugar with maltose, which was more sticky and delicious, and gradually took on its current appearance.

It is said that after receiving Saqima's thank you, Li Laosan came to his residence with his things. He wanted to share them with the children, but in the end he only saw Nidan'er.

"Father, what did you get?" Nidan'er opened her huge eyes, full of curiosity.

"Manchurian Bobo, sir asked me to give you something to eat. I heard it's very expensive." Li Laosan didn't know its "foreign name", only the local name: "What about your brother and the others? The three called over to eat together."

"My brother and the others are going to be Bendelmu, I guess we'll have to wait a while." The oily paper package couldn't hide the scent, and Nidan'er couldn't help sniffling.

"Stupid bird, did you go digging out the bird's nest again? If you don't learn how to clean up every day, see if I don't hang him up and beat him when I come back." Li Laosan stared at him, and he was about to burst into anger.

Ni Dan'er quickly pulled him back, and hurriedly explained: "Father, you are like this again. My brother and the others are helping the gentlemen next door to find typos. They are doing a great job. My brother is no longer the old brother."

Bendeermu, also known as "Adzeermu", refers to woodpeckers in Beijing dialect.

Both "National" and "Youth" magazines were changed to write horizontally. Some editors were not very comfortable with the rhythm. Coupled with the shortage of manpower, it was inevitable that there would be some typos and omissions. It happened that there were children playing in the yard, so Cheng Nuo invited them. To help, a special post was arranged called "Special Consultant".Seeing what these children like, "Youth" magazine also focuses on what, not what adults take for granted that children must like, which would violate the original intention of the magazine.

For children of this age, it is so precious and rare to be recognized by adults, and the reward of candied haws is not in their eyes. past.

When Li Laosan heard this, he immediately smiled happily: "It seems that the ancestral grave is really going to smoke, let your brother study hard with those gentlemen, and take a good look at them. They all have university knowledge hidden in them, and they would have been used in the previous dynasty." A great talent with fame and fame, you can take the Manchurian pastry and share it with you.”

Ni Dan'er looked at the snack box and asked in confusion, "Father, don't you want to eat it? Let me get you a piece first?"

Li Laosan felt that this daughter was not hurting in vain, and his old face smiled like a chrysanthemum: "It's too sweet, your father and I don't like to eat these frivolous things, by the way, don't worry about yourselves, remember to go to the fire room for your mother Give some, let her taste it."

Ni Dan'er seemed to understand but half understood, she walked out the door and turned back after a while.

"My mother said, it's too sticky, so you should eat the remaining half."

In the main room, Cheng Nuo looked down at the exercises brought by Ye Qisun, and sighed in his heart. Such a good person is good everywhere. He didn't expect to understand most of the "Class Field Theory" he taught this semester, even surpassing the same period. Many students from Peking University.

"Qisun, apart from the analytical method you mentioned earlier that Dirichlet used to prove the L-function, is there anything else you don't understand?"

Ye Qisun bent slightly, turned to one page of the exercise set, and said, "In the process of proving the conjecture, I still don't quite understand Heck's L function."

Cheng Nuo laughed and said, "The set of Hecke's L functions includes the set of Dedekin's functions, which generally have the decomposition form of the Euler product as follows."

The sparks of inspiration often come from the collision of ideas between each other. Facing such a studious student, Cheng Nuo even felt that he had grown a lot while teaching, and he had a clearer understanding of the next step in the development of class field theory. planning.

After explaining all the difficult problems to this little friend, the inspiration exploded. The proof process of the original class field theory was too dependent on the analytical method, which made it extremely cumbersome and the threshold for getting started was very high. You can try to simplify the process with the algebraic method. Talev's "Intersection Thought of Divided Circle Expansion" proves the law of reciprocity in general algebraic number fields.

To put it simply, it is to give the one-to-one correspondence between all finite Abelian extensions on the number field k and all quotient groups modulo generalized groups through mapping, thereby changing the narrative method of class field theory.

As for this law of reciprocity and the name of mapping, they are directly called Wang's law of reciprocity and Wang's law of reciprocity.

It's like he made a math patch for himself, a more powerful version.

On the basis of my previous work, the new thesis was quickly produced, and the process was sorted out in just a few pages, leaving Ye Qisun on the side stunned. Is writing a thesis so simple and casual?
"Sir, why haven't I seen you citing other papers?"

"Hey, I quoted it, and I noted it later. I quoted my last paper on the proof of Kronecker's Dream of Youth. You can read it again." Cheng Nuo didn't know why, so he deliberately turned the paper to the back.

Ye Qisun's jaw almost fell off, and he only quoted one of the full texts, which was still his own paper, except for the essential formulas and theorems, all of them were proved by him alone.

If you think about it carefully, a figure like the patriarch of a discipline, even if it is only a sub-discipline, can only be cited by others and contribute to the impact factor.

Thinking of this, Ye Qisun even felt that physics was no longer good, and grabbed Cheng Nuo's clothes: "Sir, I won't go to the United States, I want to learn arithmetic under your door!"

Cheng Nuo was taken aback, and the hand holding the thesis visibly trembled: "Qisun, natural science is an indispensable part of talent and hard work. Although you have come a long way in mathematics, it is not as good as you in physics. Highly talented."

Seeing this, Ye Qisun let go of his hand, and his eyes gradually became rational: "What you said is very true, what kind of science is my ability the most? Only physics!"

Seeing this, Cheng Nuo wiped a sweat in his heart, almost killing the future of physics in the motherland.

Taking advantage of the situation getting better, Cheng Nuo quickly changed the subject: "Qisun, I heard that your school's "Tsinghua Weekly" has published a lot of articles, and it just so happens that we founded a journal called "Youth", which is specially aimed at young readers. Help us with one or two staff?"

(End of this chapter)