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

Chapter 696 Brother-in-law, you cheated on me?!

10 month 9 day.

Friday.

School of Mathematics, Beijing University.

"Today we will mainly analyze the distribution of prime numbers."

Xu Qingzhou stood on the podium.

Despite being quite busy, Xu Qingzhou still taught a course called "Riemann Hypothesis" at Peking University. He was on edge all day, so teaching this course was a way for him to relax.

And it's quite interesting.

You can feel the energy of the young people in the classroom.

"The Riemann zeta function and the distribution of prime numbers. Why would the distribution of the non-trivial and trivial zeros of a function over the complex field be related to something seemingly unrelated to nature?"

"This requires starting with Euler's formula."

Xu Qingzhou picked up a pen and wrote formulas on the whiteboard.

Below the stage, the lecture hall was full of people, including students and occasionally people who looked like teachers.

The Fields Medal winner, who personally explained the Riemann Hypothesis, was undeniably attractive, drawing not only students from Kyoto University but also many students from neighboring universities who came to audit the class.

Time passes slowly.

In the afternoon, the sun shone brightly, a breeze blew through the classroom, and the curtains fluttered gently in the wind. Soft light filtered through the glass and fell into the corner of the classroom.

Everything appeared peaceful and serene.

The voices of the young people echoed in the lecture hall.

"The Prime Number Theorem is concise and elegant, but its description of the distribution of prime numbers is still rather rough; it can only provide..."

Ding

As Xu Qingzhou was speaking, his phone on the table suddenly started vibrating.

He reached out and turned off the vibration, continuing, "All it can give is an asymptotic form of the distribution of prime numbers."

"And here we must mention Riemann's 1859 paper, 'On the Number of Primes Less Than a Given Value,'"

Xu Qingzhou stopped, noticing that the phone on the table was vibrating again.

It's that same phone number again.

"In fact, if mathematicians were to select the most difficult papers in the history of mathematics, this paper would definitely be among the top."

Xu Qingzhou hung up the phone while speaking.

"As I mentioned earlier, Euler's product formula is the foundation for studying the distribution of prime numbers, and Riemann's research actually began with it."

"For example, in order to eliminate the product on the right side of the formula, Euler took the logarithm of the numbers on both sides, and Riemann did the same. However, here comes the key point, at this step."

Xu Qingzhou wrote down another formula.

"The two have parted ways. Euler has withdrawn his troops, while Riemann has embarked on a more difficult, even thorny, path."

On stage, the young man spoke eloquently and logically, progressing from simple to complex, occasionally quoting classical texts and making special points.

The audience members were extremely attentive.

Finally, it was time for the 5-minute break. Xu Qingzhou waved to everyone to rest and took a sip of tea to moisten his throat. In the classroom, apart from a few people who went to the restroom, most people were sitting and resting.

"Tsk tsk, how about it? Didn't make a mistake coming here?"

In the audience, a boy said smugly to his friend next to him.

"Yes, it feels different. Listening to Professor Xu's lectures makes me feel like I've been elevated."

The boy said, "Uh, you didn't understand that, it wasn't a profound understanding."

friend:"."

The boy coughed lightly, "However, it is indeed very interesting. I have always been bad at math, and I only scored 145 in the college entrance examination, but after listening to Professor Xu's lecture, I felt that I could understand most of it."

The two people spoke in hushed tones.

Who called?

On stage, Xu Qingzhou put down his water glass and remembered that he seemed to have received a phone call earlier.

"Professor, let me get you some water."

A perceptive girl has already come over.

"Thank you."

Xu Qingzhou thanked her. He knew the girl; her name was Zhou Jingshu, and she had enrolled in his class last semester.

hum~
Coincidentally, just as I picked up my phone, the call came in again.

"Wow, that's quite persistent."

Xu Qingzhou smiled inwardly as he answered the phone.

"Hello."

Xu Qingzhou was on the phone, speaking in English, which drew curious glances from many in the audience. Everyone was very curious about this legendary mathematician who graduated from Peking University.

"This kind of phone call from abroad might just be from a world-class mathematician."

The boy who spoke earlier said in a low voice.

My friend nodded: "Judging from Professor Xu's expression, it probably is true."

Many people thought so, and a sense of solemnity arose in the hearts of the audience, as if they were witnessing a dialogue between two great mathematicians.

“Yes, this is me,” Xu Qingzhou said in English, his expression somewhat subtle. “Hello, Mr. Griffin. Um. Okay, it’s an honor to receive your call. Okay, I understand. Thank you.”

"."

Xu Qingzhou hung up the phone, let out a long sigh, and his expression was even more complicated than before.

After the girl finished fetching the water, she helped Xu Qingzhou put his teacup down. "Professor, are you alright?"

Xu Qingzhou snapped out of his daze, said thank you, and shook his head, saying, "It's nothing serious."

The bell rings.

Xu Qingzhou took a deep breath, picked up his pen, and continued with the formula: "Here, we can prove that the double summation on the left side of the expression (5-1) of lnζ(s) is absolutely convergent on the complex plane Re(s) > 1."

dorm room.

My roommate Wu Ziyue asked, "Lulu, are we going to the second cafeteria later?"

"No, I'm going to my cousin's house for dinner today," Song Lulu shook her head.

"alright."

Wu Ziyue nodded, resting her chin on her hand: "It's a pity. If nothing unexpected had happened, we should be in Professor Xu's classroom listening to a lecture right now."

"We can go earlier next time," Song Lulu suggested.

"We arrived 20 minutes early today! There were absolutely no seats available!"

Wu Ziyue said helplessly, then paused, and then became a little excited: "But I'm satisfied, hehe, my idol is indeed as gentle and handsome as I imagined."

Song Lulu didn't say anything. She really wanted to say that your idol actually gets beaten up at home a lot because he's always picking on his hands.

"Is your cousin's house far from the school?" Lin Yueli put down her notebook and asked curiously.

Song Lulu said, "There is some distance."

"Yeah, houses around schools are so expensive."

Lin Yueli sighed, "My parents originally wanted to buy a house nearby so that I could stay there when I needed it, but recently the holiday schedule has been quite unpredictable."

And so the class ended.

Xu Qingzhou walked straight to the parking lot after leaving the classroom.

When he arrived, Song Lulu was already waiting by the car.

"Brother-in-law."

Song Lulu waved.

"Well, let's go."

"Brother-in-law, your class is so popular! My roommate and I wanted to audit it, but even though we arrived 20 minutes early, there were no seats left."

"Are you still interested in the Riemann Hypothesis?"

Xu Qingzhou was surprised.

Song Lulu nodded: "No, no, no, I'm allergic to math. I'm just keeping my roommate company. You don't know, she's a huge fan of yours. She even uses your picture as her wallpaper."

"Does she know that you know me and your cousin?"

"I don't know. I haven't figured out how to tell her yet."

The two chatted casually as they drove out of the school gate and waited for the traffic light at the intersection.

Hey~
At that moment, Xu Qingzhou's phone beeped with a message notification.

He glanced at it and closed his phone.

On one side, Song Lulu, who was rambling on and on, suddenly stopped and looked at Xu Qingzhou, "Brother-in-law, you... have someone else outside?"

Xu Qingzhou froze: "What the heck?"

"You didn't want me to look at your phone just now, acting all guilty. It's like what they do on TV when a cheating boyfriend does."

"Stop, stop, stop! What the hell is this?!"

"and you."

"It's a small matter."

"Little things?"

"Yeah, I just won an award."

"Ok."

(End of this chapter)