Chapter 296 Sooner or later you will ruin my waist
Yandong Garden.
Xu Qingzhou and Song Yao didn't read. They stayed at home, playing games and watching TV. They were ready to be like two cats, little losers who did nothing. So, on the 2nd, they passed by in a mess.
Xu Qingzhou hadn't gone to Academician Chu's place yet, but he received an invitation letter on the 3rd.
Invitation letter to the Xia Guo Mathematics Conference Annual Meeting, December 14th Mathematics Conference.
The Xia Guo Mathematics Annual Conference can be regarded as a mathematics grand ceremony in Xia Guo. The three major awards in the Xia Guo Mathematics community will be announced at that time: Hua Luogeng Mathematics Award, Chen Shengshen Mathematics Award and Zhong Jiaqing Mathematics Award.
Theoretically, Xu Qingzhou should be able to receive an award, but there are many factors that affect the award, so it is hard to say too absolutely.
It doesn’t matter, people who engage in scientific research still have to let their results speak for themselves.
Xu Qingzhou shrugged, stuffed the invitation into the book beside him, and sank into complex calculations again.
Recently, there has been a lot of news about Polignac’s conjecture.
There are two that attract the most attention. The first is Professor Turst's research group at Johns Hopkins University. Although the last announced proof was an own mistake, Professor Turst showed that prime numbers are evenly distributed in arithmetic series. Adjust the "level" issue.
He also posted on his Twitter that "surprising progress has been made."
The second one is the Institute of Advanced Mathematics of the Indian Institute of Technology, which also claims to be able to solve this problem that has troubled the world for nearly a century.
There is still pressure on Xu Qingzhou.
The competitors are world-class mathematicians.
He had read the paper published by the Indian research institute half a year ago, and had also made calculations. He felt that it was unlikely to be certified, but since the other party dared to be so high-profile, there must be progress.
After completing the estimation of the exponential sum, he is now estimating the zero points related to the Riemann zeta function and its generalized function.
The improved harmonic sieve method, exponent and this part of the content, plus the current content of the Riemann zeta function, are all aimed at building a perfect mathematical tool that can reflect the distribution of prime numbers.
All tough.
"Hoo~"
Xu Qingzhou breathed into his hands.
The temperature is getting colder and colder, and he estimates that it will definitely snow in November.
When Song Yao went to Professor Li Daiyue's house, there was only one cat and one person at home.
The second cat lay lazily in his nest.
"Lazy cat."
Xu Qingzhou pulled out a new manuscript and started writing.
Day after day passed, and on Friday night, Xu Qingzhou treated San Sen from 101 to a meal of boiled mutton.
On November 7, the heating was turned on, and the house became hot instantly.
In these days, Xu Qingzhou was completely devoted to the calculation of Polignac conjecture. It was not until Monday that he reported to Academician Chu Jiangfeng.
Academician Chu’s office is on the 2nd floor of the Institute of Science and Technology.
Two people in the office.
One looks about 30.
This man's name is Yang Yongze, who was a student of Academician Chu. He graduated with a Ph.D. and then worked on projects with Academician Chu.
"Xiao Xu is here."
Academician Chu waved Xu Qingzhou in.
"Professor Chu, Senior Brother Yang."
"Junior brother." Yang Yongze greeted with a smile.
At the same time, I lamented in my heart that Xu Qingzhou was too young.
Moreover, this junior brother is a man of great influence. He is already famous at a young age, has outstanding achievements, and is a genius.
"No need to be restrained."
When Xu Qingzhou sat down, Academician Chu said straight to the point: "Your senior brother and I are currently conducting research in the field of harmonic analysis, mainly on the estimation of the solution of the nonlinear wave equation of the generalized Strichartz inequality and research on scattering theory."
"I have no hard requirements for you. I don't need you to follow my research direction, and I don't set paper requirements for you. After all, it's easy for you to publish a few SCI papers."
"And now you have your own project."
"Thank you, professor." Xu Qingzhou thanked him.
Academician Chu asked: "As a graduate student, do you want to continue in the direction of number theory, or do you have other interests? I suggest you choose what you are interested in. After all, interest is the best teacher."
"I want to learn the content of harmonic analysis first."
Xu Qingzhou said. The core tool of harmonic analysis is Fourier transform, which can convert a signal in the time domain or space domain into the frequency domain, thereby revealing the frequency components of the signal.
It involves partial differential equations, complex analysis, potential theory, operator theory, nonlinear analysis, probability theory, etc. Electric fields, potential energy in physics, and wave functions in sound waves can all be studied through harmonic analysis.
The effect is quite big.
Xu Qingzhou was familiar with it, but if he didn't learn it well enough, he would have to ask mathematicians to help with huge calculations.
Now that we have time, it is better to start with harmonic analysis.
"Harmonic analysis?"
Academician Chu thought for a while, nodded, rummaged in the drawer for a while, and took out a USB flash drive, "These are all my research materials over the years. In addition to partial differential equations and combinatorial mathematics, it also contains harmonic analysis. ”
Next, Academician Chu assigned Xu Qingzhou a reading task, "Classic Fourier Analysis" and "Modern Fourier Analysis", "Singular Integrals and Related Topics", as well as Fourier analysis of ams, etc.
Some of the books here have been read by Xu Qingzhou before.
For example, the first two books, written by grafakos, are very good. Of course, they have shortcomings. They did not explain the language of Guanghan clearly, and there are many mistakes.
These books need to be read side by side.
"If you have any questions, just come and ask me."
"No problem."
After staying in Academician Chu's office for a long time, Xu Qingzhou took the hard drive and left.
This is also the difference between graduate students and undergraduate students. Undergraduate students focus on a wide range of courses, focusing on exams, and more passively accepting knowledge, while graduate students focus on scientific research, focusing on papers and projects. Graduate students need to conduct independent research and actively explore the frontiers of the subject.
Many people say that graduate students seem to have essentially broken away from the category of students and are already regarded as social animals.
Some graduate students take classes, but Academician Chu doesn't do it, and he doesn't think it's necessary.
"Xu Qingzhou, it's snowing!"
At 8 o'clock in the morning, Xu Qingzhou was sleeping soundly when he was woken up by Song Yao. When he opened his eyes in a daze, he saw Song Yao standing excitedly at the head of the bed.
"If it snows, let it snow. It snows every year." School belle Song wanted to pull him out from under the covers.
Xu Qingzhou turned over and hid himself in the quilt, not wanting to move. He had already been in Kyoto for a year, and the beauty of Song School was still so excited to see it snowing.
"This is the first snow in 2015!"
"It's freezing outside, and the weather is perfect for sleeping." Xu Qingzhou was unmoved, and tried to drag Song Yao into the abyss of depravity, issuing an invitation: "Would you like to lie down for a while?"
Song Yao pressed on Xu Qingzhou through the quilt.
"Get up and die again."
"Can't you get up?" Song Yao rubbed Xu Qingzhou's face.
"Alas~"
Xu Qingzhou's sleepiness was wiped away by Song Yao, and he nodded helplessly: "Get up."
10 minutes later.
Walking to the balcony, Xu Qingzhou couldn't help tightening his collar, and the cold wind blew into his clothes.
"It rained so hard."
Xu Qingzhou was a little stunned.
The whole world has turned into a vast expanse of white. Snowflakes are all over the sky, like goose feathers, flying in the air. The wind is blowing harder and harder, and the snow is falling denser and denser, weaving into a big white net.
Song Yao, wearing a cute blue and white pajamas, reached out to catch the snowflakes, "It's so romantic for two people to look at the snow like this."
"A little silly." Xu Qingzhou couldn't help but add.
It's so early in the morning, how nice it is to lie under the quilt together.
"Hiss~" Xu Qingzhou's waist was twisted hard by the girl.
"You mean Sazi?"
"No Sazi"
Song Yao snorted and continued to lie on the railing to watch the snow.
Romance is romance. After standing on the balcony for two minutes, Song Yao and Xu Qingzhou were forced into the house by the cold wind.
"My waist has to be pinched by you during the day, and I have to work hard at night."
Xu Qingzhou held his waist and mumbled into the bathroom to wash up. Song Yao wanted to pull this man back and beat him up.
(End of chapter)