Dreaming can be a boss

The laughter continued again.

"So, Dean Jiang is so optimistic about you, so students, don't let him down."

The unprepared turning point came from the advice of the elders, but it also made the students feel grateful to that Dean Jiang in their hearts. After all, they helped them invite such a big man in the domestic mathematics field, and they did their best. .

Nowadays, although many unethical professors and teachers have been disclosed in the news, compared to the entire Chinese teacher group, they are just a drop in the bucket, but because of the survivors' deviation, they are particularly prominent, so that they discredit the entire teacher group , so that when most people hear university professors, they will immediately be regarded as the kind of unscrupulous and unscrupulous "beasts" who oppress students.

In fact, there are still many good teachers. If the current news media can often interview those teachers who are dedicated to their duties, instead of preferring to expose teachers with taints, the situation of Professor Wen’s discoloration will also improve. .

Next, Professor Fu didn't talk any more, after all, he was invited to the class.

He walked to the multimedia, clicked on the first page of ppt, and the title appeared.

euclid space.

Su Lu quickly realized that this was Euclidean space.

As a major difficulty in mathematical analysis, just understanding the definition of Euclidean space can make people's brains hurt, let alone other knowledge involved in it.

With Su Lu's sensitive hearing, he could hear some voices discussing the difficulties behind him.

"Euclidean space, the definition in the book is a bit abstract. To put it simply, it is a special linear space. Why is it special? Let's start from the era of Euclid."

"Because in the era in which Euclid lived, the world he could touch was our three-dimensional space. I don't know if he knew that what he researched was finally defined as a four-dimensional space or even developed to n-dimensional. But most of his research is located in our three-dimensional space."

"So he studies pure two-dimensional space and three-dimensional space, that is, the plane on which a piece of paper is located, and the space with only three coordinate axes of length, width and height."

"This is the original Euclidean space. In modern times, we have a standard Euclidean space, which is the four-dimensional space I just mentioned."

"Do you know what the fourth dimension is?"

Suddenly, Professor Fu asked.

For college students in this era, this kind of question is completely blurted out.

"It's the time dimension!"

"time!"

"Ti!"

……

Various answers, but all related to time.

"Yes, it is indeed the time dimension."

Professor Fu nodded, "But everyone should not really think too much about this statement, because it is just a definition of the space we humans live in. Anyone who has a deep understanding of this point should know that time is just a record. The speed of object movement, or a tool for object change, is created by man, and the real time is controlled by God. What time pauses, reverses time, and speeds up time are all God's skills. is the real dimension of time."

"Everyone should know that two-dimensional creatures can only walk or regress on length and width, but not on height. As three-dimensional creatures, we can walk and regress on length, width and height, but we cannot walk and regress on the time axis. "

"It's a bit far away. It's related to physics. Let's go back to our Euclidean space."

Then, I saw Professor Fu picked up the chalk, came to the blackboard, and started the same way that the math teachers did in class - writing calculation formulas.

Chapter 51 Mind-numbing Math

"Let me explain to you from a mathematical point of view what is a four-dimensional space, which is the standard Euclidean space."

"The first is the four-dimensional Euclidean space r?. We need to note that as an r-linear space, dir?=4 to describe it as four-dimensional."

……

……

A lot of inexplicable calculation formulas, a lot of symbols that I don’t know how to call (typed), and all kinds of inexplicable characters, suddenly most of the students in this lecture hall who have weak foundation in mathematics or are just joining in the fun are confused. Circled.

who am I? where am I?

What is written after that sigma?

What does that beta represent?

Mathematics is like this, if you don't pay attention, you will find that you can't keep up with the teacher on stage.

The girls next to Su Lu almost cried out.

"Wow, is it really good to target me, a sophomore rookie?"

"Crying, I can't understand after just a few minutes of class."

"Yuanmei! You pay me for an afternoon!"

"Don't ask me, I didn't know it would be so difficult! I thought it would help us learn economics."

……

Obviously they have given up treatment.

While Su Lu was thinking along with Professor Fu on the stage, he also heard the discussions of the girls next to him, so he couldn't help but twitched his lips and almost laughed out loud.

I didn't expect it to be a young lady from the School of Economics next door, but this is too stupid, right?

Why do you come here to listen to Euclidean space as a student of economics?

Isn't it good to learn more about indefinite integrals and multivariate function differentials?

Anyway, Su Lu has never been involved in the application of mathematical analysis in economics, and he doesn't understand how economics can be related to Euclidean space.

It just sounds like there is no connection at all.

Shaking his head slightly, he looked at the formula above again.

"sλ=Σp'ij (Σp2β-γp)..."

All kinds of formulas, in line with Professor Fu's explanation, but very few can keep up. In the lecture hall of more than 200 people, there may not be more than 30 people who understand it. If teachers and professors are excluded, it is estimated that among the students Not more than fifteen.

And Su Lu was among them.

The calculation ability in his mind at this time is comparable to that of some mathematicians with particularly good calculation ability. It is definitely no problem to simply keep up with Professor Fu's thinking speed. He even feels that Professor Fu's thinking and calculation speed is not as fast as his. , because when Professor Fu is writing on the blackboard, he often pauses for a moment, thinking about what to write next, but he doesn't.

Because Professor Fu's writing is still relatively basic knowledge, but he only brought his own views, so Su Lu can follow his train of thought and know what he is going to write in advance.

There is a saying on the Internet that there are two kinds of people who are the happiest in college mathematics classes. One is the professors who give lectures, because although they really hope that students can understand what they teach, but sometimes they see students with confused faces. When they look on their faces, they will have a kind of joy of pretending to be a good guy, and the other is a school bully. When they find that they can completely keep up with the professor, and then see the confused expressions of the students next to them, they will also feel a kind of complacency pleasure.

Anyway, their source of happiness is exactly the same, after all, Lu Xun once said: Happiness is based on the pain of others.

Scumbags: (The joys and sorrows of human beings are not the same, I just think they are noisy jpg)