"First of all, I would like to thank my elementary school math teacher, who made me interested in mathematics, after middle school, I came to Beijing Normal University, where many first-class mathematicians introduced me to the beauty of mathematics, and finally I would like to thank Princeton, thank you for providing me with the opportunity to crack Poincaré's conjecture!" Speaking of this, Lu Qiujian paused slightly, and a smile appeared on the corner of his mouth, "But I still want to persuade you, dear Princeton, if possible, can the final exam questions in the future not be so difficult?" It's a terrible feeling that you can't do the exam paper!"

With a bang, the audience laughed, and "Science" published the little story behind Lu Qiujian's paper, and they all understood Lu Qiujian's joke. Everyone's eyes turned to Professor Nan's direction, and Dyson beside him grew his mouth happily and patted him on the shoulder.

In 1904, the French mathematician Poincaré put forward the Poincaré conjecture, which attracted the attention of countless mathematicians in the following hundred years, Whitehead tried to interpret it in a three-dimensional Euclidean space, and Papachlac Prouse once turned it into a pure group theory problem, although these ideas failed to solve this problem, but still have their positive significance.

"It's really enviable, if one day I can, even if there is one-tenth, one-twentieth or even one percent of today's people to listen to my report, I will die without regrets!" Xu Ye couldn't help muttering at the back of the lecture hall, and Li Yincheng on the side nodded in agreement.

Even Xiao Yue, who was from the foreign language department, looked at the stage with stars in her eyes, "Eh, do you understand?" Xu Ye couldn't help but ask.

"What's the matter if you don't understand? Don't you think he looks handsome on stage!"

"Valentin-Benahu's thousand-page paper was found to be wrong, but we are still slowly but surely moving towards the truth; Mr. Smale completed the proof of five dimensions and above; Mr. Friedman proved the Poincaré conjecture of the four-dimensional plane; Mr. Thurston introduced the method of geometry to cut three-dimensional manifolds; and Mr. Hamilton finally discovered the most important tool for solving the Poincaré conjecture -- the Ricci flow!" said Lu Qiujian and stopped his speech.

The mathematicians in the audience applauded Smale, Thurston and other geniuses who had made outstanding contributions to solving the Poincaré conjecture, and they also smiled and waved.

"It is on their basis that I can complete this final work. Now I will tell you the main process of proving Poincaré's conjecture!" The applause subsided, Lu Qiujian turned on the projector, and began the formal report against the finished courseware, "I propose a monotony of the Ricci flow, which holds in all dimensions and does not require the curvature hypothesis......"

The lecture hall slowly fell silent, whether it was the mathematician in the front row, the students in the back, and even the officials in the front and the camera staff on the side, they all held their breath, for fear of missing a single word that came out of Lu Qiujian's mouth.

As the pages of the courseware were flipped, the secret of Poincaré's conjecture was gradually revealed, and Xu Ye let out a soft sigh. There was a sour feeling in my heart, the guy who was not eye-catching except for his height when he first entered college has now become an existence that he can never catch up with!

Grothendieck's eyes were full of relief, Newton and Leibniz were followed by Euler, Euler was followed by Gauss Riemann and Poincaré and then Hilbert came up, and he led the mathematical world after Hilbert, and now there is another young genius who has entered the temple of mathematics, and the times are developing rapidly, and mathematics will never stop.

Hamilton shook his head lightly with a smile. As if to say, I have been doing Ricci flow for so many years, why didn't I think of this step? But how lucky I am compared to those mathematicians who have passed away! I can witness the great moment when Poincaré's conjecture was solved.

The corners of Wiles' mouth curled. Reserved with a hint of pride, I wonder if he remembered the moment when he was in the lecture hall of Cambridge University and talked about proving Fermat's theorem.

Professor Zhang took off his glasses and wiped his tears, and the figures of Ke Zhao, Min Sihe, Pan Chengdong, Su Buqing, Wu Wenjun, Feng Kang, Chen Jingrun, Hua Luogeng and other seniors appeared in his mind. After generations of predecessors have caught up, Chinese mathematicians have finally stood at the top of the world's mathematical community.

The president's mouth opened slightly, as if he had seen a student from Kyoto University. Climbed the podium of the highest honor in mathematics.

The heads of the elder and the vice premier were next to each other, and an expert behind them whispered to them explaining the significance of Lu Qiujian's report, sometimes nodding and sometimes looking up at Lu Qiujian on the stage, and occasionally exchanging two opinions in a low voice, I don't know what they are discussing?

As for the mathematics department of Beijing Normal University and the students from other colleges and universities at the back, looking at Lu Qiujian's free and eloquent appearance on the stage, a sense of pride erupted from his chest - the husband should be like this!

During this period, there was a short break, except for those who really couldn't hold back and had to go to the bathroom, the other participants sat in the middle of the room, and some of them were anxious and directly used various languages to put forward their opinions on his thesis to Lu Qiujian! So much so that the principal had to come out to remind him that the time for asking questions was scheduled for the afternoon, and the current report was not finished!

After the break, Lu Qiujian continued to give a report, "Building a Key Elliptic Estimation and Applying a Coarse Subdivision Solution to Prove Thurston's Geometric Guess"

Seeing that the order that had just been a little chaotic due to the rest in the audience had returned to calm, the eyes of the audience refocused on Lu Qiujian, whether they could understand it or not, they all pricked up their ears and listened carefully, lest they miss the treasure.

The formal report began at nine o'clock in the morning, followed by a fifteen-minute break at half-past nine, and then continued until twelve o'clock at noon, when the report finally came to an end.

Holding the mouse in his hand, Lu Qiujian flipped the courseware for the last time, and the last page of the courseware was displayed on the curtain, on which the conclusion of Poincaré's conjecture was clearly written, turned to the audience, and said calmly, "I think I'll end it here!"

The audience applauded thunderously, and although only a very small number of people could really understand what he had just said, everyone knew that this was a historic moment. (To be continued.) )

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