After the two sat down, the waiter at the bar brought a cup of coffee and put it in front of Duan Yun with a smile.

"Mr. Duan Yun, I have read both of your previous papers published in Acta Mathematica magazine, and to be honest, I am quite shocked. Fefman looked directly at Duan Yun and said, "Whether it is the cracking of the Hodge conjecture or the Riemann conjecture, this is a milestone event in the history of world mathematics. ”

"Even without me, these world problems will be solved by others sooner or later, and I am just luckier than them. Duan Yun said with a smile.

Although Duan Yun's two papers are indeed great, Duan Yun still needs to maintain enough humility in the face of the world's top mathematicians like Fellman.

"Mr. Duan Yun, you are too modest. Fefman smiled slightly when he heard this, and said: "Actually, when I first saw your Hodge conjecture cracking paper, my first reaction was that you should at least be an old scholar who has worked in the field of mathematics for decades, at least fifty or sixty years old, but when I saw that your resume said that you were only eighteen years old, it really shocked me......

"Mr. Fefman, you think too highly of me, in fact, I am far worse than you, I heard that you published your first paper when you were fifteen years old, and I was still thinking about how to pass my final math grades...... Duan Yun pouted.

Hahaha. Fefman laughed when he heard this, and then said: "No, no, no, there is one thing I want to correct, I did successfully publish my first academic paper at the age of fifteen, but in fact, my first mathematical paper was not very difficult, and most of it should be attributed to my mathematical tutor, and the difficulty and gold content of your two papers can be called epic, there is no comparison at all, even now, I can't complete a paper of your height." ”

Fefman was clearly a very humble and kind man.

Generally speaking, scholars who can reach a certain height in academics have a bit of arrogance in their bones, and this Fefman obviously has more proud capital, but Duan Yun so far, he can't feel the slightest arrogance from his conversation, and he is quite modest in his words, which is obviously a problem in the realm of a person.

So the two had just started talking, and Duan Yun had a good impression of Fefman.

"Mr. Fefman is so modest, I'm really just luckier than the average person......" Duan Yun said with a smile.

"Some historical scientific achievements do require luck, such as the well-known story of Newton and Apple, but in the high-end mathematics world, it is impossible to solve the world's top problems twice in a short period of time, which cannot be solved by luck alone, do you Chinese people like to be so modest?" Fefman shook his head, and then asked: " According to what I know from my colleagues at Huaqing University, the school that submitted your thesis, in fact, you have not really gone to college, and your academic qualifications are only at the level of the first year of Huaxia High School, but there is a professor at Huaqing University who instructed you to study mathematics, is this the case?"

"That's right, my master is a professor from Huaqing, although he is not as famous as you, but in our country, he is one of the top mathematicians. Duan Yun nodded when he heard this, and then said, "I can have today's research results, and my master has contributed a lot. ”

"Then you mean, in fact, this paper is your master's......" Fefman said with a frown.

"Don't get me wrong, I wrote the paper, but I learned more valuable things from my master, and his personality and knowledge are worthy of my respect. Duan Yun paused, and then said: "Before I met my master, although I had some talent in mathematics, in fact, I didn't realize my potential, and I was not very interested in mathematics personally, but my master successfully aroused my interest in mathematics, and also became my guide to enter this industry......

"Uh. Fefman looked a little thoughtful when he heard this.

"Let's put it this way, when my master said that I had the potential to become a mathematician, I didn't know what it was about, and I kind of thought that there was going to be an organization that gave me a problem to solve. Duan Yun bit his lip lightly, and continued: "But under his guidance, I began to discover that what real mathematicians do is completely different from the problem-solving skills and formula memorization when I was a student. Even those who experienced great success during their college years may lack certain qualities of a mathematician. Tao found that speed was far less important to the ancient art of mathematics than patience and cunning, and the improvisation and collaboration flair of jazz masters. ”

"Makes sense. Fefman's eyes lit up when he heard this.

"It's like you study music, but you've just been practicing scales and learning music theory," Duan Yun looked out the window, the sunlight shone on his face, and said, "I didn't know the deeper meaning of mathematics until much later. ”

"It's really what it takes to be a true mathematician, and your teacher is a person who deserves respect. Fefman thought for a moment, then asked, "Then what I want to know is how much your teacher has helped you with these two papers, or how many parts of this paper have been completed by your teacher?"

In fact, when Fefman himself heard this, he had already begun to question whether Duan Yun was really capable of solving world-class problems like Hodge's conjecture.

The perception of becoming a mathematician is one thing, Feffman's perception of Duan Yun is not bad, but since Duan Yun has such a powerful master, then he must have given Duan Yun a lot of guidance, even crucial, but Duan Yun himself should not have the ability to complete this paper independently.

In addition, in fact, there are many examples of tutors and students jointly writing papers and publishing them in the West, but in Fefman's view, these two papers should also be completed by the master and apprentice, but Duan Yun's master must be a person who has a very indifferent view of fame and fortune, so these two papers left Duan Yun's signature.

Only the topic of the dissertation was selected by my master, and I did the rest of the work alone. Duan Yun told the truth.

"Mr. Yun, can you explain to me your way of solving the Riemann conjecture now?" Fefman took out his laptop from his seat and placed it on the dining table.

Fefman's intention was obvious, he actually wanted to see how high Duan Yun's level of mathematics was.

As soon as the so-called connoisseur makes a move, he will know if there is one.

As long as Fefman listened to Duan Yun's solution to the problem in person, he could quickly judge how high Duan Yun's true level was.