Chapter 822: 1 question test

learn……
mathematics?
Lu Zhou froze slightly.
Silent for a moment, he said with a slight cough.
"Computational materials science is also a kind of mathematics ..."
"I don't want to learn calculation materials," Han Mengqi shook her head stubbornly. "I just want to learn math."
As if she felt that her expression was not accurate, she added another one later.
"I mean, pure mathematics."
"Pure math ..."
Hearing this request, Lu Zhou suddenly felt big.
Although logically speaking, he didn't really want to talk about the ideals of others ...
but……
Putting down the ball-point pen in his hand, his ten fingers crossed on the desk, Lu Zhou asked Han Mengqi seriously.
"Can you tell me why ... you've studied computational materials for three years, why did you choose to switch to pure mathematics at this time?"
In general, it is common to switch from pure mathematics to other applied mathematics disciplines, but it is rare to switch from this applied mathematics discipline to pure mathematics.
And if it is someone else, but of all his students studying computational materials, Han Mengqi is the most gifted and the one who is most satisfying to him.
Even Jericho, who has been a Ph.D. candidate at MIT, doesn't necessarily match her in talent.
Obviously, in the field of computational materials science, he has to switch to a new field. It is impossible to say that he does not feel sorry at all.
After all, in training her, Lu Zhou also considered a lot of hard work.
In the face of Lu Zhou's serious eyes, Han Mengqi looked away slightly, hesitated for a moment, then said with some complex tone.
"I didn't like chemistry at all ... I chose chemistry at first because of adjustment. In fact, I originally planned to transfer to the math major. As a result, you got an undergraduate training plan at Jinda University. It happened to be in the top spots in the department again. After being asked a few words by the guide, he signed up stupidly ... "
Perhaps she felt that this reason was too naive, so that she would be embarrassed to continue to talk about it later.
Transfer?
Lu Zhou almost did not spit out old blood.
Sister ... Oh no, younger sister, you are almost graduating with a master's degree. Is it really appropriate to choose the old yellow calendar for the professional adjustment?
"Isn't there any adjustment? My math major is also adjustable," Lu Zhou tried to persuade with a crying expression. "The key is not whether to adjust, but whether it is suitable or not-"
"Not suitable or not," Han Mengqi shook her head, looked at Lu Zhou seriously, and said, "but like it or not."
Looking at her serious look, Lu Zhou froze slightly.
Speaking of which, this seems to be her first refutation of her views ...
After being silent for a while, Lu Zhou remembered what he had said before, but finally sighed and said.
"... You're right, interest is the best teacher."
Aside from the system factors, he really likes to study mathematical problems and the feeling of being immersed in the mathematical world, so he chooses mathematics as his direction of struggle.
If his students really like math ...
He did not stop her position.
Even in his opinion, computational materials are obviously more suitable for her than mathematics.
Hearing Lu Zhou's approval, Han Mengqi's face burst into a smile and said happily.
"that--"
"I won't stop you," looking at Han Mengqi with a happy face, Lu Zhou paused for a moment and continued, "But my doctorate is not so easy to test ... especially pure mathematics."
Slightly squinting the corners of her lower lips, Han Mengqi said firmly.
"It doesn't matter ... I will work hard."
"... Some things can be done not only by hard work. Mathematics is a discipline that tests talents, especially pure mathematics. There are many people engaged in research in this field, but they can really make what can be called results But there are very few. Some people spend their entire lives only learning and summing up the knowledge of their predecessors, far from being creative. "
Having said that, Lu Zhou pulled a piece of draft paper from the table, picked up the ballpoint pen resting on the table, conceived for about ten seconds, and wrote a line of calculations on the paper.
Looking at this formula, Han Mengqi wrinkled Qiongbi slightly.
"this is……?"
It looks very simple.
Lu Zhou replied lightly: "Riemann zeta function."
Having said that, he wrote down the last part of the question.
As soon as I heard the words Riemann, he was still thinking about Han Mengqi, which seemed to be a simple question. He immediately struck a spirit, and said tremblingly, "Did you assign me such a difficult assignment when I came up?"
"Don't be afraid of hearing Riemann, but you will live in the future 150 years after his death," Lu Zhou smiled, handed this super high self in the hands of Han Mengqi, "In addition, this is not an assignment , But the exam. "
"……examination?"
"Yes," Lu Zhou nodded. "If you can solve this problem, I will allow you to study a PhD in pure mathematics here."
Having said that, he paused for two seconds, and then added another sentence later.
"Of course, if you change your mind and want to read computing materials, the door to my office is still open for you."
After all, Lu Zhou was quite satisfied with her paper on topological crystal insulators. If this little girl can retreat from difficulties and return to continue to study the calculation materials, he is certainly quite welcome.
Want to learn pure mathematics ...
This stuff is not so easy to learn.
Staring straight at the draft paper in his hand, looking at this line of calculation and the problem of seeking transcendental numbers, Han Mengqi felt a numb scalp.
Not to mention how to solve it, she didn't even figure out the problem itself.
In the past, when she was studying computational materials science, the mathematical methods she used were basically concentrated in the fields of functional analysis, geometry, and topology. Such knowledge of analytic number theory, even if she heard it, she would not remember live……
however……
If she gave up like that, it would be too unlike her.
Gritting his teeth, Han Mengqi looked up and stared at the landing boat.
"Don't expect me to step back ... I will start by gathering information."
"How come, I am looking forward to your answer," Lu Zhou smiled and continued. "However, your time is only two months. I hope you can give me an answer before the end of the year."
"Well, where it takes two months, one month is enough."
With a stubborn snorting sound, Han Mengqi took this draft paper and turned away.
After the door opened and closed again, the office returned to quietness, and only the sound of the pen brush was heard.
Sitting in an office chair for a long time, Lu Zhou suddenly looked up at He Changwen who was sitting at the table not far from him-the pure doctor of mathematics he was taking, and asked.
"Chang Wen, if you want to prove that ζ (2n) is a transcendental number, you can think of several ways."
He Changwen, who was struggling with his pen, stopped the pen in his hand. After hesitating for a moment, he pushed the glasses on the bridge of his nose with the pen cap inserted in the back and said.
"I ... probably think of one ... no, there should be two ways."
The last half of the sentence, after hesitating for a moment, spoke in a positive tone.
With his ability, this sentence should be true.
Lu Zhou nodded and said briefly.
"Both are good ~ EbookFREE.me ~ He Changwen hesitated a little and asked:" Is it too difficult for a master student? "
Although the professor just talked to the master student, he didn't listen to it intentionally, but he heard some passively.
For those who have not been exposed to pure mathematics at the undergraduate or master's level, it is indeed a bit too difficult to challenge such a difficult problem.
This is not only a problem of lack of mathematical methods, but also a test of thinking that learns pure mathematics. These things are not easy for a beginner, let alone a layman who has not yet started.
Lu Zhou smiled slightly.
"At the PhD level, it was time to learn to ask questions and find ways to solve them."
"If she can think of a method different from the standard answer, then it is the best."
"If she can't figure it out, it only shows that she doesn't have the talent in this area. It is better to carefully rethink the way forward."