My Senpai Knows Magic

Chapter 29 Do you understand?

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After the crowd, a piece of apple that Isabella had just picked up with a fork dropped to the ground.

She opened her beautiful eyes, stared blankly at the front, and exclaimed, Blair!

It's him……

Among the crowd, there was also a hint of surprise on Alice's face. The second-year magic genius, Blair's theorem, the first author of the mystery of Raus, and his actions at the moment...

All this shows that there are enough reasons for this junior to deserve her attention.

The sudden situation made Britney stunned, but then her expression changed, and she hurriedly said, Blair...

Her words were interrupted by another person just as she was about to leave her mouth. Debbie looked at the spoiler in front of her and said angrily, Who are you!

I'm Teacher Britney's student, and my name is Blair. Chen Luo looked at the woman in front of him and said calmly, Ms. Britney's time is precious, if it's just a problem of this level, don't bother me Teacher, I will answer your doubts on her behalf.

The purpose of the academic salon is to communicate among scholars.

Mathematicians gather together to discuss problems and exchange ideas with each other, and it is also common for beginners to ask questions from masters.

However, the number of great scholars is scarce and their energy is limited, so it is impossible to solve everyone's problems. At this time, their disciples will answer their questions on their behalf.

Or, those disciples feel that some questions are too simple and not worth bothering their teacher.

This young man named Blair is obviously for the second reason.

At this moment, everyone present had only one evaluation of him.

Madness!

How arrogant!

What do you mean by only this level of problem, doesn't he know that it is this level of problem that stumps several university scholars at the headquarters of the Wangdu Mathematics Association and all mathematics researchers in the Kingdom of Nolan, Questions of this level, including them, everyone present could not give an answer!

Behind, an old man looked at Chen Luo, frowned slightly, and said, Which family is this little guy from, I don't know how high the sky is...

Calvin looked at Chen Luo with a strange look on his face, and said in a low voice, Look, maybe this little guy really has the possibility to create miracles...

Britney looked at Chen Luo with a hint of worry in her eyes. Chen Luo smiled at her and said, Sit here and wait for a while, I'll be fine soon.

After finishing speaking, he looked at Debbie and the others, and said, Can you let me go?

Debbie gave Chen Luo a cold look, and gave up an empty table. She didn't believe that the little-known Britney could solve the problem of the Nine Bridges of the Royal Capital, let alone her young and shameless student. This problem has stumped countless mathematicians and even university students. Could it be that Can he compete with the entire mathematics world with one person?

Chen Luo was already surrounded by people. The issue of the Nine Bridges of the Royal Capital had been circulating in Yabo City for some time. Almost everyone present had studied it, but there was no result.

If you can get the answer to the Nine Bridges question here tonight, then this will be the biggest gain from participating in the academic salon tonight.

Although it sounds unbelievable that a difficult problem that stumps all university students will be solved by a student who is a rookie in mathematics --- but isn't this the charm of mathematics?

The Goddess of Wisdom is not fair, and all mathematics researchers must admit that such things as talent seem to be illusory, but they really exist.

The results they have exhausted their entire lives to research may really not be as good as others casually messing around...

Under the starry sky of mathematics, countless geniuses were once born out of the sky, and with the power of one person, they illuminated the entire night sky.

Chen Luo, who had become the focus of the audience, calmly picked up the quill and drew a strange figure on the paper.

The so-called Nine Bridges of the Royal Capital by these scholars and the Seven Bridges of Königsberg that Chen Luo is familiar with belong to the problem of one-stroke painting.

The Seven Bridges of Königsberg problem is one of the famous classical mathematics problems in the 18th century.

The problem of seven bridges is described as follows. In a park in Königsberg, there are seven bridges connecting two islands in a certain river with the river bank. One day, a boring thought came into the mind of a passerby. Is it possible to start from any of these four landmass, cross each bridge exactly once, and return to the starting point?

Although there are two more bridges than the Seven Bridges of Königsberg in the Nine Bridges of the Royal Capital, it is essentially a one-stroke problem.

The Seven Bridges problem stumped many mathematicians in the 18th century, and it was Euler, one of the greatest mathematicians in history, who finally solved it.

Thinking of Euler, Chen Luo couldn't help thinking of Euler's teacher Bernoulli, and Bernoulli's teacher was called Leibniz.

Euler also had a student named Lagrange, and Lagrange later accepted a student named Cauchy—these names were once a nightmare for Chen Luo in college.

Until now, he still couldn't forget the shadows that were once dominated by these people.

Euler not only solved the Seven Bridges problem, but also created a new branch of mathematics --- graph theory and geometric topology while solving the problem. At the same time, he also summarized and classified such problems, and obtained And proved several more extensive conclusions about strokes, which are usually called Euler's theorem.

ever since

The problem that has plagued countless great mathematicians has become a point-giving question for the elementary school Olympiad.

Chen Luo is not interested in teaching these people the elementary school Mathematical Olympiad, but he must take into account the face of Teacher Britney.

Putting away these thoughts, he looked back at the graphics on the paper. Although the one-stroke problem is simple, it involves an important mathematical idea, which abstracts a complex practical problem into a suitable mathematical model. This mathematical idea, It only began to germinate in the eighteenth century. According to the level of mathematical development in this world, it may take hundreds or thousands of years to produce this kind of modern mathematical thought.

Chen Luo pointed to the graph on the paper, and said: The problem of nine bridges can be expressed equivalently in this way. We consider each piece of land as a point, and the bridge connecting the two lands is represented by a line, and then we get the graph on the paper. , If you can start from one point and draw this figure without repetition, it means that you can start from a piece of land, walk all over the Nine Bridges without repetition, and then return to the starting point.

A scholar was the closest to Chen Luo. He had just seen the graph he drew on the paper. When he was confused, he heard his explanation. Reduced to geometrical figures..., what an ingenious idea!

The scholars around had also studied the Nine Bridges problem. They crowded to the table, looked down at Chen Luo's graph, and immediately realized that this was the simplification of the Nine Bridges problem.

In a short period of time, most of the people around put away their contempt for the young man in front of them.

No matter whether he can solve the Nine Bridges problem or not, just this kind of exquisite thinking can make him win the respect of everyone.

This has taken the Nine Bridges issue a big step forward.

Douglas's face was calm and he couldn't see his emotions, while Debbie's face became a little unsightly. She glanced at Chen Luo and said, You...

Don't talk yet. Just as she opened her mouth, she was interrupted by a person beside her. The person didn't look at Debbie, looked at Chen Luo with asking eyes, and said, Please continue.

Debbie's face turned red, but she didn't dare to say anything else. The other party was a well-known scholar in Yapo City, and her status was higher than her elders.

Chen Luo nodded slightly to the scholar, and continued: Obviously, except for the starting point and the ending point, when someone enters a piece of land by a bridge, he must leave by another bridge. Therefore, except for the starting point and the ending point, every block The number of bridges connecting the land to other lands must be an even number... We call the points connected by an odd number of line segments on this graph an odd point, and the points connected by an even number of line segments are called an even point. ...

Teacher Britney stood behind Chen Luo, with a dazed look on her face, and murmured: If you want to start from the starting point and finally return to the starting point, then you must reach all the points and leave all the points, so, only All the points are even points, only the Nine Bridges problem can be solved...

As Teacher Britney said. Chen Luo turned around, looked at Teacher Britney with a smile, and said, The problem of the Nine Bridges of the Imperial Capital obviously exists a singularity, a land that can only be entered and cannot be left. Therefore, There is no way for people to start from the starting point and finally return to the starting point without repeating all nine bridges...

To sum up, there is no solution to the problem of the Nine Bridges in the imperial capital.

After Chen Luo finished speaking, he looked at Debbie and the others, and asked, Do you understand?

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