From all-round academic master to chief scientist

"yes."

Lin Xiao nodded again, looking at the confused look on Xu Hongbing's face, and asked puzzledly: "Didn't you leave that question for me?"

Xu Hongbing waved his hands repeatedly: "Are you kidding? That is an unsolved problem in mathematics. How could I leave it to you...wait?"

After saying this, Xu Hongbing was suddenly shocked. Yes, this is an unsolved problem in mathematics. What did Lin Xiao say before?

Did he figure it out?

He stared directly at Lin Xiao and said in disbelief: "You said you... wrote it out?"

Lin Xiao also stood stunned on the spot when he heard Xu Hongbing's words.

Clam?

I accidentally wrote down an unsolved problem in mathematics?

Are you kidding me?

He looked at Xu Hongbing's widened eyes and asked cautiously: "Didn't you leave me this question? But I saw it on the desk."

Xu Hongbing said angrily: "Whatever I leave for you, I leave for myself. I usually think about this issue when I have nothing to do. It has been for several years."

"So I only left you two pieces of paper with eight questions, but no ninth question."

Lin Xiao touched his nose and scratched his head. This was really... a bit surprising.

"No wonder, I just said why this question is so difficult, it took me nine hours to write it."

Xu Hongbing almost spit out a mouthful of old blood. You spent nine hours. Do you know how much I spent?

Three years!

Do you know how much time I have wasted in the past three years?

At least ninety hours.

You only spent nine hours, just say it Jill.

Of course, Xu Hongbing did not directly believe that Lin Xiao had really completed the proof. Every year, I don’t know how many civil scientists said that they had proved Goldbach’s conjecture. Some even wanted to go to the Chinese Academy of Sciences to find other professors to verify it. The Chinese Academy of Sciences asked the gatekeeper to hold a few math problems in his hand and told them that they had to answer them correctly before they could be put in.

Of course, this does not mean that Xu Hongbing thinks that Lin Xiao is a civil science student. The previous eight questions have proven Lin Xiao's strength, and he wrote the four competition questions he asked in seventy minutes. The students he has taught No one in China can do it, so how many civil sciences can do it? If Minke could do it right, it probably wouldn’t be a Minke.

He just felt that there might be some loopholes in Lin Xiao's proof process, but Lin Xiao did not find it. After all, looking at the thickness of the stack of draft papers in Lin Xiao's hand, there were at least ten or twenty pieces of paper, and there were some that were ignored in the middle. The probability of errors is also very high.

So he stretched out his hand and said to Lin Xiao: "Let me see how you prove it."

Lin Xiao handed the draft paper in his hand to Xu Hongbing.

Xu Hongbing was not in a hurry to look. He raised his head and glanced at Lin Xiao, reminding him: "But before that, are you sure you want to hand it over to me directly?"

Lin Xiao asked doubtfully: "Ah? Teacher, isn't this okay?"

Xu Hongbing said: "If you really complete the proof, then your proof method will be seen by me. If I follow your method and publish the paper first, then it will be the honor to prove that the Fibonacci sequence has infinite prime numbers. , it belongs to me. Even if you later say that you did it, probably no one will believe it. After all, you are a student and I am a mathematics professor, and I have many friends who can prove that I have been studying this problem."

Lin Xiao was stunned for a moment, then smiled and waved his hand and said: "Teacher, you have said so, then I definitely believe that you will not do this."

Xu Hongbing shook his head with a smile: "That's true, okay, then I'll thank you for your trust, but I still want to say one thing, no matter you prove successful or not, I will definitely not do that kind of thing. Besides, you You also need to know that if you really prove successful, the honor you receive will not be comparable to even the first place in IMO."

Lin Xiao nodded: "I know, thank you teacher."

Of course he is not stupid. He knows what it means to solve an unsolved mathematical problem. After all, these unsolved problems have been studied by countless mathematicians in the mathematics world, but they still survive. It is enough to show that this kind of problem is difficult to solve. Difficulty.

Perhaps the problem he solved is not ranked high among all the unsolved problems in mathematics. It is not even well-known and not very difficult, but this obviously does not mean that it is not worth mentioning.

Solving any unsolved problem is enough to attract the attention of many people, and will inevitably lead to countless honors.

As for IMO gold medals, there are dozens of them all over the world every year. It may be a huge honor for an individual, but compared to the "annual output" of dozens, it is not worth mentioning.

Xu Hongbing nodded slightly and said no more. Then he turned his attention to the stack of draft paper. He briefly flipped through it and briefly browsed Lin Xiao's proof process.

It’s a lot and it’s complicated.

As for the knowledge used in it, Xu Hongbing has not yet determined, but he has to admire Lin Xiao in his heart. He can achieve this level just by relying on self-study. Which civil sciences can achieve this level?

Two days ago, he also saw an old classmate share a genius from the Civil Science Forum, saying that because people only fall from high places to death in low places, this means that the lower the place, the greater the gravity, so the closer to the center of the earth's gravity. The bigger it got, the more it made him laugh and cry.

Xu Hongbing no longer thought about the civil affairs affairs. He turned to the last page and saw the word "certificate" written by Lin Xiao. Then he turned back to the first page and asked at the same time: "What were you thinking at the time? Nine How can you prove this when you are young?"

Lin Xiao touched his nose and said: "I thought this was a task left by you, so I tried it. In the middle of it, I almost came up with an idea, so I succeeded by accident. I was I'm also worried that you will criticize me if I use other knowledge in the advanced algebra questions you asked."

Xu Hongbing: "...You can criticize me, but I was wrong."

Lin Xiao chuckled and said, "How dare you?"

Xu Hongbing was too lazy to say anything more and read it carefully.

Initially, when he saw Lin Xiao connecting the prime number theorem with the characteristic polynomials of the Fibonacci sequence, he nodded approvingly. This idea was a good one, but figuring out the relationship between them was a more complicated process.

Sure enough, the next twenty or so pages were devoted to studying how to connect these two equations.

Xu Hongbing looked more and more deeply. At the same time, he put the draft paper on the table, found a new draft paper, and followed Lin Xiao's process to calculate.

In this way, he turned over page after page, his eyes becoming more and more shocked.

He couldn't find a single error in calculation or logic!

…

Until half an hour later.

Xu Hongbing gently put down the pen in his hand, as if he remembered that he could breathe, took a deep breath, and then said to Lin Xiao: "You..."

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