Chapter 210 You have to find time to learn two tricks
The next morning.
At 8 o'clock in the morning, Xu Qingzhou went to the restaurant for breakfast with a senior brother named "Zhang Hong". Senior brother Zhang was a student of Professor Feng in the demonstration group and was now a second-year PhD student.
At the door of the hotel restaurant, he also saw two other professors from Beijing University.
"Xiao Xu is here."
"Professor Feng."
"Come on, Xiao Xu, let me introduce to you. These two are Professor Lu Ling and Professor Jiang Shiding from the School of Mathematics. The other two professors are not with us and have gone to the venue first."
As soon as Xu Qingzhou arrived, Professor Feng pulled him over and greeted the professors who were also from Peking University.
in the country, family background is important, while academic pursuits are based on school.
Regarding Xu Qingzhou, who also graduated from Peking University and is also a mathematics genius, the two professors were very enthusiastic and had many kind words. Xu Qingzhou also responded one by one.
Zhang Hong calmly greeted Professor Feng and the two professors.
Professor Lu Ling looked at Zhang Hong and asked with a smile: "Xiao Zhang, you look like this, did you stay up late again?"
"It took a while." Zhang Hong nodded.
Xu Qingzhou looked at Senior Brother Zhang's two big dark circles and thought that it might not be that simple all at once. Judging from his experience of staying up late, he didn't go to bed until at least 5 o'clock.
"Xiao Zhang, as academics, we still need to take good care of our bodies." Professor Jiang Shiding also said.
Professor Feng glared at Zhang Hong angrily: "Did you hear that? Pay attention, kid."
Zhang Hong forced a smile on his face: "I understand, teacher."
Professor Feng shook his head, knowing that his student had not listened at all, so he immediately said hello and went to the report meeting with the two professors.
Xu Qingzhou and the two went to have breakfast first. After eating, they headed to the lecture hall of Jinling University together.
Zhang Hong held the latest issue of "Mathematical Invention" magazine in his hand, "Junior brother, here is the asymptotic formula for twin prime numbers. Can you talk about this approximation method?"
"Here, in order to avoid R in (23) growing too fast, we require λd to always be zero when d>z on the basis of λ=1. Combining (17) and (25), we can find that The limit on λd translates perfectly into a limit on Uk."
This question is on Xu Qingzhou's list of questions and can be answered without even thinking about it.
He actually found that Senior Brother Zhang was quite interesting and a real math madman.
Chatting about math problems, it was not boring along the way, and we arrived at the report meeting address in ten minutes.
The process of this type of report meeting is similar. One or two large reports will be arranged every day, with speeches delivered by well-known experts or scholars in the field. The rest of the time will be small group discussions held at the venue provided by the organizer.
However, when you walk into the venue, you can find a completely different style from the one in Cambridge. The atmosphere is more serious. At least there are no people holding posters and shouting everywhere.
The domestic influence of this special conference is second only to the annual Xia Guo Mathematics Conference. It has a high influence in Xia Guo, but it is slightly insufficient internationally.
Xu Qingzhou took a look and saw that the people coming and going were all Xia people.
After signing in, we entered the lobby smoothly.
The speaker of the first session was Professor Sun Weizhi, and the content was about his latest discovery: any integer greater than 4 can be expressed as the sum of an odd prime number and two positive Fibonacci numbers.
Xu Qingzhou and Zhang Hong found an empty seat and sat down. Professor Sun Weizhi is currently the Beidou in the field of number theory at Xia Junior High School. In order to study the distribution of prime numbers, he had read Professor Sun Weizhi's "New Proof of the Erds-Ginzburg-Ziv Theorem" , a finite set of integers.
9am.
Professor Sun Weizhi came on stage and began to explain his latest findings. Xu Qingzhou took out his notebook, took notes, and quickly became immersed in the professor's explanation.
As time passed by, he finally felt like he was in Cambridge. At 10:20 am, the report will end.
Brother Zhang followed Professor Feng to attend a group discussion titled "Gauss's Quadratic Reciprocity Law".
Xu Qingzhou planned to walk around first, find someone he was interested in, and then go in and listen.
However, as soon as he turned half a circle, his arm was grabbed violently, which startled him.
"Xu Qingzhou?!"
It was a young man with a European face, who called Xu Qingzhou's name with a strange accent.
Xu Qingzhou nodded, but wanted to correct him. I am not wrong at all.
The young man didn't seem to know Chinese, and shouted in exaggerated English: "Oh, it's you! Damn it, do you know, because of you, all my efforts for a year have been in vain!"
Xu Qingzhou took half a step back without leaving any trace. The look in the other person's eyes made him a little bit suspicious whether this person wanted to hit him. What moves did the school beauty Song often talk about to use on him, such as chokeholds and deadly scissors? leg.
Damn, I don’t know how to do it. I really need to find time to learn a few tricks from Song Yao.
The young man's face became even more excited, and he punched Xu Qingzhou directly in the chest. Of course, it was just a light punch, "Brother, well done!"
Xu Qingzhou's forehead is full of black lines. If you look like this, let alone praise you, I will believe you even if you say you want to hit me.
The young man stretched out his hand and introduced himself with a smile: "Xu, let me meet you. My name is Denzel Dennison. I am currently teaching at Pericles and engaged in prime number research."
"Denison, hello." Xu Qingzhou shook hands with the other party.
Denzel didn't show any concern and said, "Do you have time? I still have many math questions to ask for help?"
"Of course." Xu Qingzhou nodded and said with a smile in English: "Before that, we have to ask the organizer to borrow a classroom."
The procedure is quite convenient, you just need to register the topic of the discussion group with the staff.
At this time, Denzel glanced at his phone and said apologetically: "Xu, I'm afraid I need to wait a moment. I have to pick up two friends. Let me tell you secretly that they are here for you too."
Xu Qingzhou nodded. He was also unfamiliar with Jinling University and could not do anything to pick people up.
However, as soon as the staff heard this, they offered to come along.
Under the leadership of the staff, Denzel went out to pick up the students, while Xu Qingzhou walked slowly towards the second floor. The classroom assigned to them was on the second floor, Classroom 209.
There are people in the classrooms in front.
For example, in classroom 205, there are formulas written on the blackboard, which seem to be about the Riemann function. Several professors with thin hair pointed at the blackboard and expressed their opinions.
Classroom 209 was empty. Xu Qingzhou hadn't entered yet. A head popped out of Classroom 210 in front of her. She was a girl wearing a mask.
The other party waved and urged: "That classmate, hurry up!"
Seeing that the girl's target seemed to be him, Xu Qingzhou looked strange and looked around. There were only two uncles around him. It seemed that he was the only one who could be called a "classmate", so he walked over.
"Why are you alone?"
The girl with a bun on her head pulled Xu Qingzhou into the classroom and complained.
There was already a layer of sweat on her forehead. She handed Xu Qingzhou a mask first and said, "Just one mask. I'm already too busy. I need to clean everything here before 11 o'clock. By the way, you can put these two masks first." Move the table over there."
Denzel probably wouldn't be back for a while. Xu Qingzhou had nothing to do, so he simply wore a mask and followed along.
In addition to the people in the preparatory group of the Mathematics Society, there are also organizations such as the Jinling University Student Union helping. This girl must have regarded him as a volunteer.
(End of chapter)