Chapter 373: Visit Harvard

In the field of partial differential equations, there is a big enough authority in the field, Lu Zhou thinks about it, only Qiu Chengtong old.
Regarding Mr. Qiu's achievements in differential geometry, there is no need to say much.
Opening the preface of the "Lecture Notes on Differential Geometry", you can see the sentence "He is the founder of the school of geometric analysis."
What is geometric analysis?
It is the method of moving partial differentiation to differential geometry.
Although the domestic academic circles have had mixed evaluations of him because of the sharp contradiction with Yanda University, the international academic circles have a very high evaluation of the Chinese scholar.
And this can be seen from the honors he received.
At the same time, there are only two mathematicians in the world including the Fields Award, Wolf Award, and Clayford Award. One of them is Lu Zhou's mentor Deligne, and the other is Qiu Chengtong.
At the time when the Chen Shengshen Math Award was presented, Lu Zhou and Mr. Qiu Lao had a relationship, but since then they have not had much intersection because of different research directions.
The NS equation is a problem in the field of partial differential equations. For the field of partial differential equations, among the scholars Lu Lu knows, there is no doubt that Mr. Qiu Lao's achievements and knowledge are the highest.
A sturdy Ford explorer parked near the building of the Department of Mathematics in Cambridge, Boston, Massachusetts.
After getting off the car, Lu Zhou looked around, not knowing how to go the next way.
So he intuitively stopped a passer-by who looked like he was studying mathematics and asked.
"Hello classmate, how do you get to Professor Qiu's office?"
"You're looking for Professor Qiu?" The boy with glasses glanced at Lu Zhou doubtfully. He always felt that the person looked a little bit visually, but couldn't remember where he had seen it, so he asked, "What's wrong with you looking for Professor Qiu?"
Lu Zhou: "Some questions you want to ask."
Maybe I saw him too young to look like he could ask any brilliant questions. After hearing this sentence, the glasses man smiled slightly: "Professor Qiu has no time to answer those simple questions. If you have any questions, you can directly ask Ask me. "
After hesitated for a moment, Lu Zhou smiled and said, "Really? Then you can solve it for me, why does the Navier-Stokes equation have non-trivial backward self-similar solutions?"
The moment he heard the problem, the spectacled man stunned.
Unwilling to just admit that he couldn't think of it, he began to think about it. However, frowning and thinking for a long time without thinking about how to answer this question.
It can be seen that the partial differential equation should be his specialty, and he also knows the Navier-Stokes equation.
However, it is also clear that he did not go deep enough into his profession, or that his research direction was not on this.
Otherwise, it is not difficult for him to know a little about the Navier-Stokes equation. This question was actually answered by a three-digit scientist such as Neas in 1995.
Lu Zhou looked at the table and said casually, "Can you take me now?"
"Yes, brother, you asked me to stop," the glasses man smiled calmly and nodded reluctantly, "... Come with me, but Mr. Qiu Lao is a busy man, I can't guarantee that he will see you. "
Lu Zhou smiled, said nothing, and followed him.
Lu Zhou learned as he walked along the road, the man's name was Zhao Yan, and he graduated from Mizuki with a bachelor's degree. He is now studying at the Harvard Department of Mathematics and studying with Professor Steve Nadis, a good friend of Mr. Qiu Old Zhibo.
"Are you new to the undergraduate?"
Lu Zhou did not deny it, but asked: "Why do you say that?"
Zhao Yan grinned: "Because you have a lot of hair, you look younger."
Lu Zhou: ...?
This……
Is it a reason?
Without stopping, Zhao Yan continued to talk bluntly: "... which reference book you probably saw the problem from, but I suggest that you should focus on these frontier areas of research. It is more important for the knowledge of this profession to lay a solid foundation than to study those super-class content from a high level. "
This man is very interesting, not bad, just too warm.
If you become a professor in the future, you will surely be loved by the hardworking students.
Lu Zhou smiled: "It makes sense, I've been taught."
Seeing that this "learning brother" was so taught, Zhao Xun's heart was not happy, and he smiled heartily, saying generously: "When going out, everyone is a fellow countryman, and it is right to help each other. If you have any questions in the future, you can come and find them. Me, call me Brother Zhao, or Brother Sihuo! "
Lu Zhou: "Then call it Brother Four Fires."
This name sounds interesting.
Zhao Yan said with a smile: "You know my name, then my brother, what's your name, you should tell me."
"Lu Zhou."
Lu ... Zhou?
Zhao frowned, frowning, his brain didn't turn around for a while.
As they were walking, the two had reached the door of Mr. Qiu Lao's office.
Although the office door was open, Lu Zhou knocked gently, out of courtesy.
He stopped the pen in his hand, and Mr. Qiu Lao, who was writing at his desk, looked up.
When he saw the man who appeared at the door, the old man gave a slight frown first, and then his frown, which was locked because of thought, stretched out a kind smile.
"Yo, slacker," put down the pen in his hand, Mr. Qiu got up from the chair, greeted the door with a smile, "What wind blows you out of Princeton's hut?"
Lu Zhou smiled and said modestly: "I encountered a bottleneck in my research. I want to ask you some questions about partial differential equations."
Looking at Mr. Qiu's attitude towards the young man, Zhao Min, who was standing at the door, immediately slammed his head and stood there with a stern look.
At this moment, he always remembered why the sense of vision came from ...
Thinking that he had been pretending to be a big guy for a long time, he suddenly felt ashamed to find a seam on the ground to drill in.
He didn't notice the change in the expression on the face of the man at the door. After hearing the explanation from Lu Zhou, Mr. Qiu's eyes flashed a look of interest.
"Partial differential equations? This is an area I am familiar with. Can you tell us what direction?"
"Related to the NS equation."
Slightly hesitated, the expression of interest in Mr. Qiu's eyes grew stronger and stronger.
"NS equation? This is an interesting question ... Sit down first, I'll find my teapot, I'm afraid I won't be able to talk about it for a while."
Lu Zhou nodded ~ EbookFREE.me ~ sit down casually beside the tea table.
At this time, Mr. Qiu suddenly noticed that the man was still standing at the door, and hesitated slightly.
"……you are?"
Zhao Yan immediately stood up and said, "I'm Zhao Yan, and I'm reading a blog with Professor Steve Nadis!"
"Oh, Professor Nadis's student," Mr. Qiu hesitated, and pushed his glasses. "... So you sit?"
"No, no need," Zhao Yan shook his head quickly, scratching his head and laughing. "I just brought Professor Lu over and I didn't bother the two big brothers to discuss the business."
Although listening to the big brothers to communicate mathematical problems, it certainly helps to their own research.
But sitting next to the two great gods was too much pressure for him to be a little transparent ...
"It's all about learning, where is the big deal?" Hearing this interesting speech, Mr. Qiu laughed and beckoned to the young man, "Come and sit down, say anything, drink too Cup of tea before leaving. "