Wandering Spaceship in Deep Space Chapter 22: This guy is only an undergraduate!

　　 After reviewing the first few questions, Professor Wang Zhong took a look at Zhang Yuan, and slowly said, "The writing is pretty good, and it’s neat. Unlike some people who use computers too much, they don’t know how to connect. Write, it’s the same as a dog crawling."

　　 Xu Yunjing, who was standing by, blushed. She shouldn't be talking about it, right?

　　No!

　　 must be someone else.

　　Wang Zhong didn't care about Xu Yunjing's expression. In his recognition, it is a student's duty to answer the first few simple questions correctly.

　　 I took another look at the medium-difficulty questions, and the answers were correct.

　　 proved to be pretty good, but the idea is a bit strange, a bit different from the normal way...

　　 It's still correct anyway.

　　 Wang Zhong took a long breath, looked up at Zhang Yuan, the anger in his heart slowly disappeared.

　　 Take a closer look, this guy is actually pretty good, very handsome, a bit like his father when he was young.

　　 More than 30 years ago, the days and nights that teachers and students struggled together have passed for a long time, and they seem to be close at hand.

　　 Time flies!

　　 Old people are always a little nostalgic. After reviewing the test papers, he thought to himself that since these questions have been done correctly, the young man's level is still a little bit, so he will not investigate whether you have gone through the back door.

　　 500,000 people, it is impossible for everyone to be a born saint. There is always a little bit of habit on the earth, which can only be corrected slowly in the future.

　　 If there is no such thing as human affection and sophistication at all, it would be too cold and insecure; but if it becomes a human affection society and bureaucracy prevails, it will inevitably be a great disaster for a civilization.

　　 Continue to look down.

　　咦, the few difficult ones behind...

　　 is also right!

　　 Not bad, very good!

　　 These questions, even some smarter students, may not be able to solve them right.

　　 Wang Zhong’s stern face began to melt, which was a sign that his mood had begun to improve.

　　 I blamed the young man. At this level, there is no need to go through the back door. An astronaut exam is not easy.

　　 Seeing Professor Wang's calming expression, Xu Yunjing also breathed a sigh of relief. After lingering in her throat for a long time, "The test paper was sent wrong", and swallowed again.

　　Since this guy has done the right thing, I shouldn’t need to say anything more? who cares!

　　The last one...

　　唔, this...

　　 A thin layer of sweat emerged from Professor Wang's head, and his expression became serious.

　　 Xu Yunjing was watching curiously. The proof of this question was really hard to understand. Moreover, when she took the exam, she was abused so badly that she didn't do it at all.

　　 "Did you make it yourself?" Wang Zhong couldn't help asking.

　　 In fact, he knew in his heart that the questions were all his own, and it was impossible to search for the answers online.

　　 "Yes." Zhang Yuan replied.

　　"Xu Yunjing, do you understand?"

　　 "Huh?"

　　 Xu Yunjing was taken aback for a moment, and suddenly he was called, his head messed up.

　　 "When you took the exam, it seemed that you didn't answer this question."

　　 She blushed and concealed it for a long time before spitting out two words.

　　 "No."

　　"Zhang Yuan, you come to tell her the idea of ​​solving the problem."

　　 Zhang Yuan thought for a while, and said: "This constructed L function has the following properties... The category of sliding projective clusters to the natural inverse functors of H will be carried out through arbitrary special cohomology theory. Decompose..."

　　 Xu Yunjing pretended to be listening carefully, and at the same time, he looked at the little brother he just met.

　　 When it comes to mathematical thinking, a good mathematician will master several methods.

　　The first method: If a problem is difficult and there is no way to find it directly, then you can try to think about its equivalent problem.

　　 To give a simple example, Fermat’s Last Theorem and Taniyama Shimura’s conjecture are a pair of equivalence problems. Mathematician Wiles proved the famous Fermat's Last Theorem by proving the Taniyama-Shimura conjecture.

　　 The second method: If this question is difficult and there is no way to find the equivalent question, then you can also try to think about a broader problem than it.

What does 　　 mean? Let's take Fermat's Last Theorem as an example. The "abc conjecture" is a stronger and broader conjecture than Fermat's Last Theorem. If the abc conjecture is true, then Fermat's Last Law is a scum, and it can be proved in just five sentences.

　　 is easy to say but difficult to do.

　　 The vast majority of people do the questions, just do the questions purely, without insight into the profound mathematical nature of them, and infer other things, not everyone knows it.

　　 Zhang Yuan explained for a long time, Professor Wang nodded with satisfaction, "Understand?"

　　 Xu Yunjing was taken aback, and replied in a low voice: "That...should understand."

　　 "Really understand?"

　　 Wang Zhong frowned, and said slowly: "Then you repeat it again."

　　"……"

　　 She blushed, feeling that there were 10,000 grass-and-mud horses passing by in her heart, and she could only stick out her tongue very distressedly, "...I don’t understand. I just understand it."

　　 According to Xu Yunjing's very reluctant understanding, the proof of the last question uses a very cutting-edge L function, which is equivalent to driving a bomber and suddenly throwing a nuclear bomb!

　　 directly blow up the question completely...

　　 is not just that this question was blown into feng shui, but the same type of question was solved all at once.

　　 This is a typical high-dimensional rolling method, full of violent beauty.

　　 Wang Zhong frowned, knowing that the graduate student he is now leading is not actually a genius. Xisha University is not the first two universities after all, and the poor quality of students is inevitable.

　　 "If you don't understand, it's fine, and no one will blame you. Don't pretend to understand in the future."

　　 He turned his head and said to Zhang Yuan: "It's a very good proof idea, but it's a little fuss. Have you read through those documents? The motivation-L function, this is the most cutting-edge mathematics."

　　 Zhang Yuan said embarrassedly: "Just after reading some introduction, cutting-edge mathematics is still too difficult for me to understand. But I know the nature of these functions, so I used it easily~IndoMTL. com~Is it easy to use?

　　 Xu Yunjing muttered in her heart: Why can't I use it easily?

　　Professor Wang couldn’t help but laughed, and said: “Use the most cutting-edge mathematical theory to solve a math problem in an examination paper? Can you use the theorem that you don’t understand? You just believe in other people’s research results. What if it is wrong?"

　　 This is also his consistent style, anyway he never praises people...

　　 But in fact, my heart is full of appreciation.

　　What is needed for scientific research?

　　 is innovation!

　　, not the kind of guy who works step by step and tries to figure it out!

　　 How many people are doing very well on the topic, it is a scum to really start scientific research. Because they can only go around in circles. When I heard cutting-edge mathematics, there was only one reaction: what I can’t do, what I don’t understand, it is simply a bible book!

　　 They dare not even pay attention, and they have not explored the unknown and the spirit of exploring the mist!

　　 "You said..." Zhang Yuan felt that this was indeed wrong.

　　 Wang Zhong’s face became a little gentle, and he didn’t dare to attack indiscriminately, which undermined the self-confidence of the young man: “You must be more steadfast in learning. This is not a mistake, but it’s not solid enough. It’s better to do it than not, so this test paper will give you 99 points."

　　 Zhang Yuan was very acquainted and nodded to admit his mistake: "I'm sorry, these are my self-study courses. I deeply understand my lack of knowledge and the foundation is not solid, so I want to study for advanced studies..."

　　"Self-study..."

　　Wang Zhong regained his senses, and a word suddenly choked in his throat.

　　What's the situation?

　　 suddenly remembered, this guy is only an undergraduate!

　　……