I am devoted to scientific research, but you want to trick me into having a love relationship?

Chapter 453: He who knows the current affairs is a hero
The next day.

Xu Qingzhou, who was lying in bed, was caught by Song Yao and went out on time at 90: in the morning. The morning lecture started at o'clock, and he was still the main speaker, for minutes.

In the afternoon, there will be group discussions.

The three-day report meeting passed just like that.

On the morning of the 23rd, Xu Qingzhou sent Chu Jiangfeng and his group to the plane and went straight to the MIT library. Song Yao went out early in the morning and returned home alone, so she went to the library.

Reading and looking up information both require a good atmosphere.

Although there is only the little useless cat at home, it is not noisy, especially during the day. This guy is basically listless and likes to lie down and sleep most of the time, but it still doesn't feel as good as the library.

Before returning to Xia Country, Xu Qingzhou wanted to organize his notes from the report meeting. Oh, and there was also the report meeting at Peking University.

The report meeting in Kyoto will last for two days, so we can use the content of this report meeting directly and just modify some details that have been perfected in these three days.

Early in the morning, the sun is bright but not as hot as at noon. It is the most comfortable time. The sun is shaded by green trees and the wind blowing from the south carries a hint of algae from the Charles River.

The lecture ended, the math giants left, and MIT returned to its former peace.
"Professor Xu."

"good morning."

Xu Qingzhou nodded and greeted the students around him who greeted him.

Hearing how everyone addressed him, he suddenly realized that he used to often hear students call him "Professor Xu".

The difference is that it used to take more than ten years to obtain this title.

Quite friendly.

Four years have passed since my rebirth
Xu Qingzhou found an empty seat in the library and sat down. His eyes looked through the window and fell on the two children playing on the lawn. That sense of unreality came back.

He began to be unable to tell whether there really was a past life. Perhaps, everything in the past was just his own fabrication.

"Or maybe, I am actually lying in the ICU right now, and everything here is just a dream."

Thinking of this, Xu Qingzhou himself became happy.

hum~
The phone on the desk vibrated. I opened it and it was a message from Song Yao.

Song Yao: "Go running in the afternoon."

Xu Qingzhou: "Are there any other options?"

I'm tired after a few days and really want to sweat, but when I send messages, I just like to be naughty.

Song Yao: “Yes.”

Huh?
It doesn't fit the character of Song the School Beauty.

Xu Qingzhou stared at the phone screen without moving.

Hey~
Sure enough, a message appeared behind Song Yao’s avatar.

Song Yao: "You can choose where to bury it."

Shivering and cold.

The husband's authority is weak.

Xu Qingzhou condemned Song Xiaohua's violence and typed with gritted teeth: "I choose running."

Song Yao: "Smart (hug)."

Xu Qingzhou: “.”

Those who know the current affairs are handsome.

After sending the message, Xu Qingzhou leaned back and thought, "Okay, now I'm sober. This world must be real now. After all, there are still teeth marks on my shoulder where Song Xiaohua bit me last night."

He shook his head, his eyes falling on the notes in front of him.

Xu Qingzhou gained a lot from the three-day exchange meeting.

Like meeting mathematician Katalin Harrigan.

The book "Singularity Theory of Extremely Small Models" that he had read before was written by this person.

The old man was in his sixties, but he was in good spirits. He was modest and rigorous during the communication. The two of them calculated on the spot to verify whether there was some kind of duality between the extreme points of the Riemann zeta function and the singular points of the algebraic cluster. Of course, there was no result.

We can only look forward to follow-up research.

In addition, he also worked with the new generation geometer Pierre to explore the deep connection between the Riemann hypothesis and geometric structure from the perspective of Grothendieck's "far Abelian geometry", trying to find out whether there is a geometric expression.

I also discussed the optimization of the complex analysis part with Terence Tao, and finally discussed quantum algorithms with physicist Witten.

There is indeed a sharp contrast between the forms of academic exchanges between foreign countries and Xiaguo.

There are no complicated ceremonies and we get to the point in just a few minutes. The focus is on academic efficiency and redundant links are omitted.

Moreover, it can be said that all those who came this time are big names.

There is no way, the Riemann hypothesis is really too important.

In the field of mathematics, the Riemann hypothesis is not the only conjecture that has not been solved for more than half a century. For example, Fermat's Last Theorem has puzzled people for three and a half centuries, and the Goldbach conjecture has remained unresolved for more than two and a half centuries since it was proposed.

The history of the Riemann hypothesis seems short compared to theirs.

But if we talk about the connection with other mathematical propositions, or even various disciplines in the field of physics, the Riemann hypothesis can be said to be far ahead.

Once the conjecture is established, all propositions that rely on the distribution of zero points in the conjecture, the error term optimization of the prime number theorem, and the error term of the prime number density asymptotically approaching (\frac{1}{\ln x})) can be greatly improved, for example, from ( O(x^{1/2+\epsilon})) to ( O(x^{1/2}\ln x)).

In addition, there are prime number interval estimates, and these will automatically hold true.

In practice, it is related to cryptography. Modern public key encryption (such as RSA) relies on the difficulty of factoring large prime numbers. After the Riemann hypothesis was proved, the deterministic law of prime number distribution may give rise to more efficient prime number generation or factorization algorithms.

In short, Xu Qingzhou was indeed busy these days, but he gained a lot.

Interestingly, at the conference, the zero-point trapping tool he used in proving the Riemann hypothesis became Xu's trapping, and the innovative physical tool he introduced was Xu's transformation.

"It's work."

Xu Qingzhou collected his thoughts and picked up his pen to continue yesterday's calculations. He was currently considering the application of Riemann's theorem in integers.

"Let ω(n) be the number of distinct prime factors of a positive integer n, in particular, ω(1) = 0. Let Fk(n) = 1, ω(n) = k, 0, ω(n) 6 = k. This defines a prime distribution function."

In June, the weather in Kyoto and Boston is actually not much different.

Yandong Garden.

"Finally home."

Xu Qingzhou entered the room pushing two large suitcases.

There was a slight smell of dust in the air. For a year, except for the landlord Aunt Jia who would come to check the water and electricity and ventilate the house, the house was completely idle all the time.

Song Yao was carrying a white backpack.

Xu Qingzhou took out some paper and wiped the two stools, then sat down, took a breath, and turned to look at the beautiful school girl Song next to him: "I think you should come and get the suitcase, and I'll carry the bag."

"I'm a girl, I don't have much strength."

Song Yao curled her lips and looked around to check the situation in the room.

"."

Xu Qingzhou was speechless. School beauty Song just liked to pretend to be a weak girl. This was probably because the more she lacked something, the more she wanted to pretend to be that thing.

"Don't sit there, clean up."

Song Yao put down her backpack and went to get a broom and towel.

"Okay~"

Xu Qingzhou first took the cotton wool in the vacuum bag to the balcony to dry, then swept the floor with a mop.

Song Yao cleaned up the bedroom and took out the sheets she brought back from the suitcase.

The two of them worked the whole morning, cleaning the house inside and out. Although it was tiring, it was better to stay in a familiar place than to stay in a hotel.

After a short nap at noon, Xu Qingzhou took the gifts to Professor Gu Zhizhong, and Song Yao also took some things to Li Daiyue.

(End of this chapter)