Chapter 414: Steady, for the sake of showing off

November 6th, Monday.

Outside the classroom, Xu Qingzhou pulled his collar together. After the two rains at the beginning of the month, the temperature in Boston dropped sharply. Now, even wearing a coat, one could feel a hint of chill.

Although it wasn't like the second class where even the aisles were full of people, the seats in the classroom were still full.

There were quite a few familiar faces.

Sun Simin, Dino Connally, and Ma Ersi from the class, etc. Except for the 22 students who chose this course, the others were people who were interested in prime numbers and came to audit the class.

There was one called Clyde Green, whom Xu Qingzhou had a deep impression of. He didn't talk much and had a bird's nest head; he was probably another fanatical math enthusiast.

Not only MIT, but even people from neighboring Harvard and Boston University came here because of his reputation.

The most different thing was that there was a familiar figure in the corner by the window: Song Yao.

The school beauty Song was resting this afternoon. She couldn't stay idle at home and insisted on coming to the classroom to listen to Xu Laoshi's lecture.

Of course, Xu Qingzhou understood. Song Yao probably saw that he had been staying at home for many days and finally went out, wanting to accompany him for a walk outside.

Having a girlfriend who is always worried about him dying suddenly... is actually quite good. Just speaking of his body, he doesn't know how many times stronger it is than before.

He is no longer the weakling he once was.

Moreover, this girl even started acting out a plot. She didn't come in with him downstairs, but accelerated her pace early and slipped into the classroom.

Xu Qingzhou came in, and the classroom gradually quieted down, with the sound of notebooks flipping. Xu Qingzhou's gaze swept over Song Yao by the window without a trace.

Song Yao was bare-faced today, without makeup, but she was originally cold-white-skinned, and without makeup, it was another kind of beauty. On the basis of beauty, there was also a sense of fragility that made people want to pity her.

Making people want to bully her.

But only Xu Qingzhou understood that the weakness was fake. This girl had even pressed him on the sofa and beaten him once this morning because he said, "Are you fat?"

He withdrew his gaze without a trace, walked onto the podium calmly to greet everyone, and officially started the class.

"In the last section, our counting function π(x, z) calculated an integer that satisfied special conditions, thus obtaining the ratio constant m=(e^y/2)^2. Since we discussed the number of integer pairs that simultaneously satisfy special conditions in (5)..."

On the podium, the young man talked eloquently, his clear voice echoing in the classroom.

The crowd below was focused, their eyes fixed on the formulas on the whiteboard.

By the window, Song Yao supported her chin, looking at the young man on the podium.

These contents were not difficult. She occasionally looked at Xu Qingzhou's manuscripts, and it seemed that with a little effort, she could master them.

If she also studied mathematics...

Well, she would still have to be pressed underneath by this pervert.

The formulas in the proof of the Twin Prime Conjecture were so complex that they were a bit desperate. She really didn't know how this guy thought of them.

Halfway through the class, many people began to take out their phones and click-click-click at the formulas on the whiteboard.

Song Yao also held up her phone, but the difference was that she was taking pictures of Xu Qingzhou, planning to send them to the two pairs of parents far away in Xia Nation tonight.

When this guy is serious, he is quite charming.

Just like the two little girls with Xia Nation faces next door, their eyes were shining. Are they here to listen to the class? They have been holding their phones to take pictures and check in.

Unfortunately, this guy is already taken.

A class ended smoothly, and Xu Qingzhou left 20 minutes for the students in the class to answer questions.

"Mr. Xu, you are currently researching the Riemann Hypothesis. Is it convenient to reveal the progress?" The first to ask was the bird's nest-headed boy named "Clyde Green."

Everyone's gaze fell on Xu Qingzhou, and one could see that they were also looking forward to this question.

Xu Qingzhou didn't hide it and said with a smile: "As of now, I plan to solve the Landau-Siegel zero point problem first."

As soon as Xu Qingzhou's voice fell, the classroom suddenly became lively.

People who study prime numbers don't know the Landau-Siegel zero point. After all, this can definitely be considered the central problem of analytic number theory and the entire number theory.

After the classroom quieted down, Xu Qingzhou continued: "Specifically, I personally think everyone can look forward to it."

"Do you mean you are about to solve the Landau-Siegel zero point problem?" Clyde Green's tone was a little excited.

Nowadays, the academic community is almost divided into two factions. A considerable number of people think that wanting to solve the Riemann Hypothesis is an impossible thing. To sum it up, it is despair for current mathematical tools.

Naturally, there is another group of people with a good mentality who have expectations for Xu Qingzhou, feeling that this genius young man will create miracles again.

And he belongs to the latter.

Things are in constant motion, change, and development, and mathematics is the same.

Below the podium, others also showed surprised expressions on their faces. Does this mean it's almost solved?

Xu Qingzhou laughed dumbly and said: "I think, for people who study mathematics, before completely solving a certain problem, one cannot make a one-hundred-percent guarantee."

Although he is 95% sure now, he still plans to be steady and give everyone a buffer space.

Clyde Green nodded slightly, said thank you, and packed his things to leave.

"Senior Xu, I have a doubt here."

Sun Simin came up with a stack of manuscripts.

Xu Qingzhou took the manuscript, finished reading the problem, and soon had a train of thought in his mind. He said in a deep voice: "You can try to find the difference for it. This will get an inequality. Perhaps you can get the ratio of the sum function of the number-theoretic function to x and always have an upper bound."

Sun Simin nodded from time to time, and wrote down the parts that were difficult to understand.

Sun Simin looked at Xu Qingzhou, her eyes burning. The problem she had been thinking about for two days, this senior got the answer just by looking at it.

"In the end, you will get a weighted average. For the subsequent steps, I hope you can solve it yourself."

Xu Qingzhou stopped at the right point.

"Thank you, Senior!"

Xu Qingzhou shook his head with a smile. Sun Simin left, and Ma Ersi came up again.

As usual, after the students were almost gone, the scholars waiting on the side couldn't wait to take their manuscripts to discuss with Xu Qingzhou.

About 15 minutes passed, and as the last young man left, there were soon only two people left in the classroom.

Song Yao walked over, her arms resting on the podium, her eyes crystal clear, pinching her voice: "Xu Laoshi, I also have a question I want to ask."

"Let's find a quiet place, Xu Laoshi will have an in-depth exchange with you." Xu Qingzhou cooperated very well, reaching out to hook Song Yao's chin.

Song Yao patted away Xu Qingzhou's claws, staring with her beautiful eyes.

"Pervert."

Xu Qingzhou had already put the manuscript into his bag and said with a smile: "You are wrong to say that. Exchanging knowledge, that economic model you did yesterday, how is it perverted? Or, did you think of something else?"

"I'm thinking about how to torture you."

"Pay attention to your persona, you are now a weak, powerless little girl."

Xu Qingzhou grabbed Song Yao's hand and pinched it.

"Then you can do whatever you want." Song Yao pfft-ed.

"That also requires your cooperation."

"How do you want me to cooperate?"

"Tonight... hiss, if you can't, you can't, why are you doing it with your hands."

(End of chapter) ===== CHAPTER 415 =====