At two o'clock in the afternoon, Professor Deligne's lecture officially began, the hardware conditions of the auditorium of Tsinghua University are still very good, the central air conditioning continuously sends fresh air, and the overcrowded auditorium does not feel boring.

"Whoa."

The appearance of the old man greeted him with the standing up of the entire auditorium and deafening applause, which is everyone's respect for knowledge, and in any era, it must be the top scholars who will always be respected by the world.

Han Sen, who applauded excitedly, was wondering when he would be able to get such treatment, but after thinking about it carefully, it seemed that his appearance on formal occasions was similar to the enthusiasm that Professor Deligne received, oh my God, I, I was already so awesome!

"Big. Family... Good. The old man's opening remarks were greetings in Chinese, which he was not very fluent in.

"Whoa." A big Chinese guy can usher in fierce applause, see this is the power of Chinese.

On the podium, Professor Deligne continued to speak: "Everyone knows me through number theory, and today I entered Huaxia to work at Tsinghua University, also because of number theory, I can tell you that now, in this school, there is a genius, he has mastered the latest research direction of number theory, and he will be an authority in the field of number theory in the world." ”

Deligne presented a new page of PowerPoint.

A new PPT, it seems to be Han Sen's ID photo deducted from the official website of Tsinghua University, Han Sen, who came to Tsinghua University at that time, looks like a handsome guy!

Offstage, Han Sen, who was crowded among the people, stared blankly at his photo on the big screen, and said in surprise: "This, isn't this TMD me?" ”

"Uh-huh!" A few obedient undergraduates crowded around Han Sen hurriedly nodded and said, "Yes, yes, yes." This is you, big guy.

On the stage, Professor Deligne began to speak: "Yes, I can say that Professor Hansen's achievements in number theory are unmatched, and he has also transformed his academic research into economic achievements, that is, Xintai encryption."

The core calculation of Xintai encryption is a fusion of Fermat's theorem, Mersenne prime related research, it is uncrackable, from its birth of a year, the world has not even touched the skin of Xintai encryption.

And I can assure you that you are facing an upgraded version of the Xintai encryption that is about to be, because Professor Hansen has completed the proof of the Goldbach conjecture and his team has completed the proof of the twin prime conjecture. ”

"Wow~" The entire auditorium erupted in surprise.

"Ah~" Several young undergraduates crowded around Han Sen looked at Han Sen blankly.

"Look at what I'm doing!" Han Sen immediately gave a tough back.

Han Sen felt extremely embarrassed.

Then, the straightforward old man did not hesitate to praise his words at all, standing on the rostrum, he was about to praise Han Sen to the sky.

This made the Chinese people in the entire auditorium very useful, although Professor Deligne on the rostrum of the auditorium praised Han Sen, not them, but each of them felt very happy.

It is a pride to bow down in front of our scholars in the top mathematics of foreign countries.

Next, there is the academic part of the lecture, because the lecture is aimed at a variety of students and scholars of all levels, so it is not very professional:

“.....

Probably the most interesting problem in mathematics is prime numbers. Many of the world's hardest problems are related to prime numbers, and prime numbers are such a simple concept that anyone who has studied multiplication and division can understand what prime numbers are. If you were to select a very simple but extremely complex mathematical concept, it would be prime. Today, we will talk about why prime numbers are complicated and interesting, and why countless mathematicians have been bent over thousands of years.

......

The most important thing in people's research on prime numbers is to hope to obtain the law of the distribution of prime numbers. Ideally, we should give the general formula P(n) for the nth prime, and at least to know the approximate sparsity of the prime distribution. So let's start with the most basic distribution relationship and see how big the interval between two adjacent primes will be?

It is easy to conclude that the interval between two adjacent primes can be arbitrarily large. It's easy to prove.

Construct a sequence of continuous natural numbers, n!+2, n!+3、......、n!+(n-1), n!+n, this sequence has n-1 consecutive natural numbers, and these n-1 numbers must not be prime.

Since n is arbitrary, this means that the interval between two consecutive primes can be arbitrarily large.

.......”

Although the professionalism is not strong, but the simpler the more things can show the ability of a scholar, Professor Deligne's simple knowledge explanation, will allow the undergraduate students with a certain mathematical foundation to have an in-depth understanding of prime numbers, but also to many high-level doctoral students and university professors inadvertently pointed out new thinking highlights.

Han Sen also listened carefully, on the podium, Professor Deligne from the Mason prime to Goldbach's conjecture to Fermat's theorem, and finally with a little regret but a little excitement Han Sen and his team have turned many conjectures related to the field of prime numbers into theorems, which has made the world a big step forward, but also made many mathematicians lose the meaning of continuing.

Then, Professor Deligne on the stage took a step forward, walked off the rostrum, squeezed into the crowd, stood not far from Han Sen, and asked, "I seem, I have found an interesting person, I want to ask you, are you Academician Han Sen?" ”

"Huh?" Han Sen was stunned.

A few obedient teenagers crowded around Han Sen hurriedly nodded excitedly, Han Sen was recognized, they were all more excited than Han Sen himself.

At the same time, the eyes of the entire auditorium inside and outside were focused on Han Sen.

......

On the rostrum, President Tang Chengxue, who was watching Professor Deligne's academic conference, looked in the direction of Deligne's finger, and instantly broke out in a cold sweat, Academician Han Sen was crowded in the crowd, this, this is amazing.

The principal angrily spoke to the head of the mathematics department: "How did you do it, why did Academician Han Sen squeeze into the crowd!" Don't you think that you don't care about Academician Han Sen with a Deligne, don't you know why Professor Deligne came to Tsinghua University? He came completely for Academician Han Sen, so it's good for you to arrange Academician Han Sen in the crowd! ”

"I, we, don't know!"

Principal Tang Chengxue scolded with hatred: "Useless things"

......

Han Sen's expression was a little subtle, very embarrassed, I came to listen to the lecture, and the speaker of the lecture was actually reading out my mathematical theory like a preacher.

Han Sen smiled at Professor Deligne on the podium, got up and bowed respectfully to him, a large part of Han Sen's research on number theory was based on the old man's research.

"Whoa~" The entire auditorium burst into deafening applause again, and outside the auditorium, the birds that had just landed on the trees to rest were startled.

......

Deligne's academic lecture was stopped by Han Sen's appearance, followed by a private conversation between Han Sen and Deligne, and when it got dark, Han Sen, as the host, set up a family banquet to entertain Deligne.

Han Sen, who was driving home, asked Professor Deligne, "Professor, is my mentor, Professor Lambert, okay?" ”

Deligne smiled and said, "Of course he is good, and he is proud to have such a good student as you." ”

Han Sen smiled, Lambert Classroom was someone Han Sen had always been grateful for, and the Bentley drove into the garage.

The beautiful Qin Jing is already waiting here, standing behind Qin Jing are Zhang Bin, Yao Ruzhi and Kuang Tong, as for Zhuang Wen and Qin Lan, the two junior graduate students have no place for them for the time being.

Han Sen smiled and introduced to Professor Deligne:

"Jingjing, this is Professor Deligne."

"Professor, this is my fiancée, Qin Jing."

"Hello beautiful Miss Qin!"

Then Han Sen introduced Zhang Bin, Yao Ruzhi and Kuang Tong, and the old man greeted them one by one very kindly.

At the dinner table, the old man was very considerate of the hostess Qin Jing was not interested in mathematics, so the whole dinner did not discuss mathematics at all, and this energetic old man made everyone laugh with his humorous jokes.