Pang Xuelin told this history, and the classroom was quietly audible, and everyone was fascinated by the story of Abel and Galois, and also became interested in group theory.

"I thought Pang Shen's lecture would be boring, but I didn't expect it to be so interesting."

"Pang Shen is really good at fooling, and after listening to the achievements of Galois and Abel, it instantly aroused my desire to learn mathematics, which is really terrifying...... Thankfully, reason helped me curb this evil thought. ”

"Galois and Abel are really awesome, you said that I am starting to study hard now, is it possible to be like them?"

"Hmph, it's just you, think too much, the one on the podium is about the same!"

……

From time to time, there was a slight discussion in the audience, and unconsciously, more than an hour passed.

Pang Xuelin looked at the time and said: "Okay, today we will talk about the history of next algebra, the origin of group theory, and the story of the two great mathematicians, Abel and Galois, about how Galois and Abel proved that there is no root solution to a one-dimensional quintat equation through group theory thought, and we will formally explain it in the next class." The reason why I have talked so much with you, I hope that you can always keep your heart on the road of learning mathematics, and in the near future, among all of you, there will be mathematicians like Galois and Abel who can fundamentally promote the progress of human civilization! There are still 20 minutes to go, so feel free to ask any questions you have. ”

There was a buzz in the classroom, and soon, arms were raised like a forest.

"This classmate, yes, the one in the plaid shirt with glasses!"

Pang Xuelin pointed to a boy sitting in the back row.

Soon, a boy with thick glasses and a little wooden looked up and said, "Professor Pang, I have previewed the relevant concepts of abstract algebra before class, but it is very difficult to understand, I would like to ask if there is a suitable reference book to recommend?" ”

Pang Xuelin laughed and said: "In this way, I recommend a few books to you, the first is "Fundamentals of Abstract Algebra" by Mr. Qiu Weisheng, this book has a clear narrative and detailed content, which is very suitable for beginners to study, and the second is "Field and Galois theory", which is characterized by step-by-step, and each theorem is clearly proved. In addition, I especially recommend Lederman's "Introduction to Group Theory", this book can be regarded as a treasure for beginners, our school library should have it, you can compare this book with Mr. Qiu Weisheng's "Fundamentals of Abstract Algebra", the content of the two books is the same, and the proof methods are almost the same, but different people use different narrative methods, which will make you have completely different feelings, and will also give you a deeper understanding of some basic concepts of abstract algebra. “

"Thank you, Mr. Pang! I'll be able to collect the books you recommend as soon as possible. ”

The boy with glasses sat down, and Pang Xuelin pointed to a tall and thin boy and said, "This classmate, do you have any questions to ask?" ”

The tall and thin boy said: "Professor Pang, I want to ask, there have been rumors on the Internet recently that you have proved the BSD conjecture, is this news true?" “

When the words fell, the classroom was suddenly quiet and audible, and all the students focused their eyes on Pang Xuelin.

Although the BSD conjecture proof has not been officially made public, there have been many rumors on the Internet and in schools, and most of the people here understand the importance of the BSD conjecture, so they want to hear what Pang Xuelin himself has to say.

Pang Xuelin smiled slightly and said: "I did write a proof paper on the BSD conjecture, but this paper is still in the peer review stage, so I can't tell you whether I have proved the BSD conjecture, which needs to be answered by my peers in the mathematical community, but I think this day should not be too long!" ”

The boy said, "Teacher Pang, how sure are you that your proof is correct?" ”

Pang Xuelin said: "As far as I am concerned, since I have submitted that paper, I am 100% sure, but whether it can be recognized by my peers in the mathematics community, we still need to wait and see!" ”

"Thank you, Mr. Pang!"

The tall, thin man sat down.

At this time, a female voice suddenly came out of the classroom: "Teacher Pang, just now you named the boys to ask questions, now it should be our girls' turn, right?" ”

Pang Xuelin followed the prestige and found that it was the beautiful mixed-race girl he had seen in the morning.

Pang Xuelin smiled: "Okay, this classmate, do you have any questions?" ”

The mixed-race girl stood up and said with a sly smile on her face, "Teacher Pang, I want to ask if you have a girlfriend?" ”

With a bang, the originally serious class instantly became lively.

Hahahaha –

The students laughed one by one, and many boys whistled.

The mixed-race girl pursed her lips tightly, and looked at Pang Xuelin with a pair of big eyes without blinking, Pang Xuelin said helplessly: "Not yet!" “

"Have you been in a relationship before?"

Pang Xuelin said: "This is a private question, can I refuse to answer?" ”

The girl smiled and said, "Yes, then I'll change the question, Mr. Pang, do you have a favorite girl now?" ”

Pang Xuelin patted his head, are the current post-95s and post-00s so fierce?

After a while, he replied, "No! “

The mixed-race girl nodded with satisfaction and said with a smile: "Teacher Pang, thank you, I have no other questions!" “

Fortunately, after the girl finished asking the question, the bell rang on time for the end of class.

Pang Xuelin couldn't help but breathe a sigh of relief, and hurriedly said: "Okay, today's class will be here first, and now the class will be over!" “

"Alas......"

Many people in the classroom suddenly let out a sigh, as if they were a little disappointed that they could no longer see the scene of the mathematics department flowers flirting with the god of learning.

Pang Xuelin put the notebook into the computer bag, packed up his things, and walked out of the classroom with the computer bag and the flow of people.

Before he had taken two steps, there was a call behind him.

"Teacher Pang, Teacher Pang!"

Pang Xuelin stopped, and saw the tall mixed-race girl running in front of him in small steps, getting closer, the girl didn't have the big square before, her delicate pretty face was slightly flushed, and she smiled sweetly: "Teacher Pang, I'm sorry just now, I was a little too excited to see the idol, so the questions asked are more sensitive." By the way, if I apply for your graduate school in the future, you won't brush me off, right? “

Pang Xuelin had a headache and said: "Then you have to work hard, I have high requirements for students!" ”

The mixed-race girl clenched her little fists and said, "Teacher Pang, don't worry about this, I will definitely be able to meet your requirements." By the way, my name is Ai Ai, you must remember! “

Pang Xuelin was slightly stunned: "Ai Ai? ”

Ai Ai smiled and said, "My father is Chinese, surnamed Ai, wormwood of Ai, my mother is British, called Alice, so they named me Ai Ai." ”

"Okay, I remember!"

"Teacher Pang, then I won't bother you, goodbye!"

"Goodbye!"

Pang Xuelin looked at Ai Ai's bouncing back, and couldn't help but smile and shake his head.

Just then, his cell phone rang suddenly.

Pang Xuelin was slightly stunned, picked up his mobile phone and pressed the answer button, and Liu Tingbo's hearty laughter came from the other end of the phone: "Xiao Pang, Tao Zhexuan just published a blog, officially expressing his approval of your BSD conjecture, this is the first heavyweight mathematician in the world to publicly recognize your results, and it may cause a storm of public opinion next, you must be psychologically prepared!" “

Pang Xuelin smiled and said, "Dean Liu, don't worry, I know it in my heart!" ”

Soon, Pang Xuelin returned to the apartment, turned on the computer and logged on to Tao Zhexuan's blog.

In the blog, Tao Zhexuan comprehensively analyzed Pang Xuelin's proof paper on the BSD conjecture, and made this evaluation: "The correctness of a mathematical proposition depends on whether its conclusion is concise and powerful, Pang has completed a great work, he has taken a new path on the BSD conjecture problem, starting from the same remainder problem, and finally completing the whole conjecture proof process, which is another masterpiece after Perelman completed the proof of the Poincaré conjecture in 2002." “

Pang Xuelin couldn't help but be a little moved, he was just a little-known mathematician in the world, and the previous upload of the BSD conjecture to arXiv only caused a certain repercussion in the mathematical community, and the major media were still in the wait-and-see stage.

Tao Zhexuan has now made such a statement, pushing himself to the forefront and building his academic reputation.

However, to a certain extent, it also shows Tao Zhexuan's confidence in this paper.

Tao Zhexuan's influence is extraordinary, half an hour after his blog was issued, CNN took the lead in reporting the relevant news: "Not long ago, the Chinese mathematician Pang Xuelin's BSD conjecture proof paper on arXiv, the achievement won the Fields Medal winner a few days ago, Professor Tao Zhexuan of the University of California, Los Angeles publicly admitted that our reporter interviewed Raymond researcher of the Clay Institute of Mathematics in the United States, Raymond said that the Clay Institute has organized relevant experts to verify the results!" “

As soon as CNN finished reporting on it, major media outlets around the world followed suit.

Associated Press: "Chinese mathematicians overcome seven major problems of the millennium and are expected to win million-dollar prizes!" ”

BBC: "China's 23-year-old math prodigy shows his extraordinary talent in the next city of the millennium's seven math problems. ”

Reuters: "Chinese mathematician Pang Xuelin claims to have completed BSD conjecture proof, Fields Medalist Tao Zhexuan supports it!" ”

Xinhua News Agency: "Professor Pang Xuelin, a mathematician in China, recently released a 63-page BSD conjecture proof paper on the internationally renowned paper preprint platform arXiv, which has received wide attention from the mathematical community. According to Professor Yau Chengtong, an internationally renowned mathematician and the first Chinese Fields Medal winner, the establishment of Pang Xuelin's proof scheme has been widely favored by the academic community, and the results are currently being further verified. ”

……

Major media around the world have reported the news that BSD's conjecture has been proven, and Pang Xuelin has also fallen into a storm of public opinion.

In less than half a day, Pang Xuelin received more than 100 calls from major media around the world.

God knows how these journalists got their hands on their private cell phone numbers.

Except for two sentences at the beginning, Pang Xuelin simply set the mobile phone to silent, except for a few calls, all other calls were refused.

On the Internet, the discussion about Pang Xuelin and the BSD conjecture quickly spread from niche forums to the whole network.

On the Sina Weibo hot search list, the hot search with Pang Xuelin as the keyword ranked first, the second place was BSD conjecture, and the third place was actually a million-dollar jackpot......

At the same time, Pang Xuelin's photos from childhood to adulthood and related resumes were also picked up and put on the Internet.