Several comments immediately popped up in the comment area: "You're welcome, Qin Ke, you're doing a great job, we are all watching the live broadcast to support you, come on!"

But it was Lin Chaowen and the others.

Qin Ke smiled slightly: "Let me just say it again. I had this idea on the plane returning from the national competition, and then I asked Professor Shi Cunyuan and Professor Lin Haibo, who were traveling with me, for advice on how to write a paper..."

"To be honest, I don't think this paper is very academic. After all, I only wrote the core argumentation process in two nights..."

"By the way, the classmate Ning next to me also participated in the writing process of my paper, because my writing skills are indeed limited, especially the 'scientific style' that gave me a headache. She helped to modify a lot of words.

It made the paper look much more pleasing to the eye. Later, Professor Shi Cunyuan optimized individual words in the paper, and that’s how the paper you see now came into being.”

"As for the process of submitting the article to editor-in-chief Xiao Mao, editor-in-chief Xiao Mao has already stated it in his personal public letter, so I will not repeat it again."

"The reason why I started this live broadcast today is very simple. I just thought that Editor Xiao is over 50 years old and is still receiving such intensive firepower. It is a bit unbearable. After all, I am young and I have no job to lose, let alone

The position can be waived, I am just an ordinary student who likes mathematics, and I am thick-skinned, not afraid of ridicule, let alone embarrassment. Learning and learning are all about learning and asking. I have learned it, and now I am waiting for you to ask!"

"Now let me briefly explain the rules. Because there are too many live broadcast comments, I can't read every one of them. So if you want to communicate with me or raise academic questions with me, you can contact me by initiating a 'Lianmai' request.

Appear on the same stage and communicate together in person."

"Of course, there may be more requests for 'continuous wheat', so the school committee next to me will randomly select one of the requests for consecutive wheat. Each consecutive wheat is limited to one question, and I will answer it within three minutes."

"As for the question, because I have only read the textbooks on the four basic subjects of undergraduate mathematics majors, you can ask any questions about these four major subjects within the scope of the undergraduate course. If I cannot start to answer within ten seconds, or I

If I get the answer wrong, I will lose."

As soon as this rule was said, everyone in the live broadcast room and even the small auditorium gasped.

If you fail to answer within ten seconds, you will lose?

Is ten seconds of thinking time enough?

Qin Ke stopped looking at the comments in the comment area and stood up slowly:

"But since there are winners and losers, how about adding some luck? If I lose, I will kneel down and admit my mistake. I will stay here and let you ridicule and slap me in the face until the live broadcast ends!"

"If I win by chance, or no one can defeat me by the end of the live broadcast, then I have only two requests. First, please stop slandering and attacking Editor-in-Chief Xiao Mao. His starting point is right. I

I also hope to use facts to prove that I have lived up to his trust. Please allow him to continue to shine in his favorite career of mathematics. The mathematics world needs such pioneers who are more serious and have the courage to reform!"

"Secondly, I would like to ask all seniors in the future to be more tolerant, supportive and encouraging to the young juniors, and less questioning and ridiculing, so that the learning atmosphere in the mathematics world will be better!"

"That's all I want to say, let's start tonight's academic exchange!"

The students from Grade 2 and Grade 3 on the stage were excited to hear this. Especially when they saw Qin Ke talking freely and looking calm and confident, they felt even more admirable. Class monitor Wu Guangben gave an order: "Grade 2 and Grade 3, stand up!"

The whole class stood up and shouted in unison: "Qin Ke, Qin Ke, we can conquer everything! Brother Ke, we will always support you!"

The shouts of dozens of boys and girls echoed in the small auditorium, which was exceptionally powerful. The director promptly divided the live broadcast into two parts. Qin Ke and Ning Qingyun continued to be on one side, and the high school sophomore was replaced on the other side.

Picture of the three classes cheering in unison.

Qin Ke bowed slightly towards his classmates, then slowly sat down, looked straight at the camera, and said word by word: "Let's get started, I, Qin Ke, am here to accept questions from anyone!"

The live broadcast room was silent at first, and then countless 666 messages started. No matter what Qin Ke's real level was, at least at this moment, his firm eyes, aboveboard behavior, and the second and third grade students behind him made people feel good about him.

It makes people feel more youthful!

After a while, someone finally made a request for wheat connection.

Ning Qingyun clicked to agree, and on the screen on the big screen, the original picture of the auditorium of Class 2 and Class 3 on the right was replaced by the picture of Lianmai.

This is a young man with a Chinese character face. The background is a bit messy. It is obviously a boys’ dormitory. He said hehey:

"My name is Chen Runyu, a junior majoring in mathematics at Zhejiang University. I won't bully you. Let me give you a simple question. What is the 'Jordang standard form' and what theorem does it come from? The essence of these two questions is the same.

Yes, if you really study hard, you won’t be unable to answer the question.”

Qin Ke smiled and said: "Thank you, Senior Brother Chen, for your noble hand. This is indeed a scoring question. 'Jordan standard form' is a knowledge point of λ-matrix in advanced algebra. Every n-level complex matrix A is related to

A Jordan-shaped matrix is ​​similar. Except for the arrangement order of the Jordan blocks, this Jordan-shaped matrix is ​​uniquely determined by the matrix A. It is called the Jordan standard form of A."

"Answer in a second. It's amazing. I had to read the book myself. Well, it proves that you have indeed learned advanced skills on your own."

Chen Runyu gave a thumbs up in surprise and disconnected the microphone.

With the beginning, the number of applications for Lianmai suddenly increased, and the number of simultaneous applications suddenly reached the upper limit of ten.

In order to show fairness, Ning Qingyun directly drew a limited number from the prepared small carton, opened it in front of everyone, she drew number seven, and clicked to agree to the seventh person's winnings.

The visitor first reported his school name, and then asked a high-level proof question in front of the camera for Qin Ke to prove.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! "1. A is an n-order reversible real symmetric matrix, B is an n-order real inverse symmetric matrix, AB = BA, prove that A B is reversible."

This question is quite difficult. Generally speaking, even if you have a good grasp of advanced code, it will take at least two minutes of thinking to prove your idea.

Knowledgeable people secretly smacked their tongues, subconsciously worrying about Qin Ke. After all, Qin Ke had said that he had to start answering within ten seconds.

But Qin Ke only glanced at the question and answered directly on the new white paper handed over by Ning Qingyun:

"Proof 1: From the question, we can see that AA^T is positive definite and BB^T=-B^2 is semi-positive definite. From this, we can get AA^T BB^T=A^2-B^2 positive definite..."

Many people in the comment area started to like: "Awesome, concise proof method, no problem."

But Qin Ke finished writing Proof 1, and then wrote: "Proof 2: Use proof by contradiction, assuming that the equation system (A B) x=0 has a non-zero solution, let it be y, A is reversible and AB=BA can be

The conclusion drawn is that 0 is greater than 0, which is obviously a mistake, and the original question can prove it."

"Proof 3: Continue to use proof by contradiction..."

"Proof method 4: Use the substitution method. If you want to prove the original question, you only need to prove that A^-1(A B)=E A^-1B is reversible. From..."

Qin Ke wrote down four methods of proof in one breath, and it only took about three minutes. He put down his pen, pointed the answer at the camera, and asked: "Brother, I wonder if any of my answers are relevant to you?"

The standard answer is the same?"

The whole place was quiet, and the countless viewers watching the live broadcast were all shocked. Even the netizens who didn't understand Gao Dai and just came to watch the fun were still stunned when they saw this high school student easily write down four methods of proof.
Chapter completed!