Technology invades the modern world

Chapter 38 I am your father
"Everyone, we've covered the basics, and now we're going to move on to some truly challenging content.

Today's class ends here. If you have any questions, please feel free to ask."

Lin Ran gave full authority to record "On the Wall Watching" to Meng Xiaodong. Although she repeatedly said she did not want any compensation, Lin Ran still insisted on giving her the money. The next day, he continued to teach his classmates at the University of Hong Kong as usual.

There were only eight people left in the huge tiered classroom, and six more left one after another.

Among the remaining eight people, those who were able to persevere did so because they had some mathematical talent and also wanted to gain something from Lin Ran.

There was Chen Jingrun from China, and naturally there were also students representing England.

In addition to this purpose, I also hope to continue my studies in the field of mathematics. I hope that by persevering for one summer and completing Lin Ran's seminar, I will be favored by him to study for a doctorate there.

Or get a letter of recommendation from Lin Ran.

For a mathematics desert like Hong Kong, getting a recommendation letter from Lin Ran means being able to apply to a top university.

Li Shaoyuan, a descendant of a wealthy Hong Kong family, naturally doesn't care about Lin Ran's letter of recommendation. They can ask a justice of the peace or even a local English noble to help write a letter of recommendation.

But for students from middle-class or even ordinary wealthy families, Lin Ran is already the best connection they can get.

Lin Ran's recommendation letters are not only useful in the field of mathematics, but also in popular majors such as economics and finance.

Perhaps the only person here who truly cares about mathematics itself is Chen Jingrun.

But after experiencing the turmoil of the past few days, Chen Jingrun became a little absent-minded.

Yesterday morning, while he was sound asleep in his tin house in Sham Shui Po, there was a knock on the door:

"Open the door, I'm your father!"

Chen Jingrun was a little dazed for a moment, thinking that he had not rested for a moment during this period and was in a trance and had a problem with his mind.

When did a father appear?

But after a moment he realized that, combined with the sounds outside, the most unlikely situation in the previous training had occurred.

Chen Jingrun quickly stood up and opened the door. As he expected, the person standing outside was Section Chief Zhang, who looked ten years older than he was in Guangzhou.

"Dad," Chen Jingrun said in a dry voice, "Why are you here?"

"I have no choice but to come. I have to come to work. It's hard to find a job in To Kwa Wan. The factory closed down before and I wasn't allowed to live in the shed. I walked here overnight. If I don't work, I won't have anything to eat." Section Chief Zhang gestured for him to go inside and said.

"Watching from the Wall" was sent back by Zhang Shizhao, including the order that Lin Ran play this song when he was interviewed by Hong Kong Radio, so that the other side of the river would realize that it was almost impossible to persuade Lin Ran to return to China.

Then the whole strategy will have to change.

The arrival of Section Chief Zhang is the most direct manifestation of the change in strategy.

On the surface, they were talking about coming here to work.

"Compared to Sham Shui Po and To Kwa Wan, there are indeed many more plastic factories and textile factories. They've been hiring recently. Dad, you could give it a try."

They were actually talking with pen and paper:

“Your mission has changed. What you need to do is see if you can stay with Lin and become his student.

If not, I'll see if I can settle for the next best thing and get a PhD in mathematics at Columbia University."

"What if it still doesn't work?"

"If that doesn't work, wait for another opportunity. Also, you need to continue cracking Lin's mathematical model. Here's some information related to missiles that might be helpful. Read it quickly, and destroy it all after you're done."

All you need to do next is give me the information you have."

Chen Jingrun, who was originally going to return to work after completing training in Hong Kong, not only did his mission change, but his life also took a 180-degree turn.

It was not easy for Chen Jingrun, who had been reading materials all night and had a father out of nowhere, to stay awake on the desk and barely keep up with what Lin Ran was saying.

"Professor Lin, how does harmonic analysis harmonize with..."

"Professor Lin, the spectral conditions for densely closed operators you mentioned here are more stringent."

Chen Jingrun persisted until the end and finally got the opportunity to have a direct conversation with Lin Ran in an unattended environment, the only time since he came to Lin Ran's seminar.

"What you're asking about is actually the definition of holomorphic semigroups, which is probably the most cutting-edge topic. Langlands recently systematically analyzed its generative and analytic properties in his paper titled 'Some Holomorphic Semi-Groups'.

You can think of a holomorphic semigroup as a mapping from an open region in the complex plane to a Banach algebra, which mainly satisfies two properties: semigroup and holomorphism," said Lin Ran.

With such content, it’s no wonder that other students left the classroom. It’s not right to stay here if they don’t understand.

As for the people from England, it would be too strange for them to stay alone in the classroom.

When it was almost over, seeing that Lin Ran did not bring up the issue, Chen Jingrun thought that today's communication was limited to the academic level.

But today's meeting obviously didn't end here. Lin Ran took out a thick stack of magazines from his briefcase:

"Dehui, this is the Journal of Applied Mathematics and Physics published by the American Society for Industrial and Applied Mathematics over the past five years. You can take a look at it. I think it will help you understand the content better."

This is the real meat of today's drama.

After Lin Ran finished speaking, he handed the magazine over. Chen Jingrun took it and felt his hand sink. He only heard Professor Lin whisper in his ear:

“记住！56-6-12、58-10-3、59-1-3，这三篇论文结合你们自己也能研究出蒙特卡洛方法！”

After finishing speaking, Lin Ran returned to his previous sitting position, sat in front of the podium, and asked with a smile: "Does Dehui have any other questions?"

Chen Jingrun was in a trance: "No, nothing more." His brain was concentrating on remembering what the other party had just said.

That’s right, when Lin Ran came to Hong Kong this time, he never just wanted to solve one or two problems. What he wanted to do was to leave a little spark for China, even if it was just a little bit.

Soon, China’s academic exchanges with the outside world will come to a complete standstill.

This stagnation is not just a stagnation of human communication, but also a stagnation of academic journals.

France did not allow overseas Chinese to ship Nature and Science magazines to China.

In 63 alone, Hong Kong prevented more than 1.3 academic journals from entering China.

During the first five years of the 60s, 42 overseas Chinese were prosecuted for passing technical information to the University of Tokyo.

This year, the Soviet Union's "International Scientific Abstracts" will stop being supplied, and China will lose its last systematic path to access cutting-edge Western scientific content.

This is an external factor. External factors may increase the difficulty of your acquisition, but internal factors are the real cause of your own unwillingness to actively obtain it.

Also this year, the Foreign Languages ​​Translation Bureau was disbanded, and only seven people will be left to translate English scientific and technological articles.

So all Lin Ran wanted to do was to leave a little spark.

(End of this chapter)