"Regardless of his death, let's just watch, after all, people don't listen to good words, and we people can't do anything about it, right?"

Liu Zhiyuan lowered his head and quickly opened his Heavenly Court version of Douyin, which can be said to include Vientiane, so a small question about mathematics is just pretending, so let's exchange it for the character's brain?

Hehe, it's still the brain of a high-end character that can be screened.,He likes this skill.,It's just that it needs to consume a little more prestige.,After all, this is already a mid-to-high-level skill, isn't it?

It's not just that you can help him pretend to be forced.,It's just that although there are more options this time.,It's also relatively flexible.,But you can't just fucking choose.,If you want to choose the interface corresponding.,You also need to check it in the prestige value.,But hehe,This is saved.。

After all, Liu Zhiyuan may not know much about other things, but mathematics is Liu Zhiyuan's favorite subject when he was in school.

Therefore, even after graduation, everything else was returned to the teacher, but he did not return the mathematical things, and he did not understand how much of the millennial problem of this era remained, but in modern times, Pang Jialai guessed that it was proved by a Russian mathematical geek, and that he was a Jew.

Well, that's right, it's always been the Jews who are smarter, and this time it was confirmed again, so the character brain he wants to exchange today will be exchanged for this main one!

Grigory Perelman's brain, it's this genius, tsk, Liu Zhiyuan shook his head for a while, why is there such a big gap between people and people?

But in a few minutes, he will have such a head, and without the existence of Grigory Perelman in this world, he will become the Grigory Perelman of this world here!

Liu Zhiyuan thought so, and a little dinging sound sounded under his subordinates, his character brain had already been exchanged, and the time limit after the exchange was completed was only thirty minutes.

And it will take more than half an hour to solve this millennial puzzle.

After Liu Zhiyuan clicked on the Jiazhong card several times in a row, he made sure that the time was long enough to at least maintain him to solve Pang Jialai's conjecture before he stopped his movements.

"Why is this person nodding his head, looking at his mobile phone, looking up, and the whole person's gaze has changed?"

"I don't know if I'm dazzled, I always feel like I'm standing in front of us at the moment and I feel like I'm directly changing someone, but if I look closely, it seems that it's still this guy named Liu Zhiyuan, I've never had this strange feeling, what's going on?"

"Maybe it's because the expression on his face now looks too serious and the hippie smile just now looks like a different person, so everyone feels like this?"

Obviously, the person who thinks this way is not the only one, and it is precisely because it is not one person that everyone makes such a voice together.

But the person in front of him really hasn't changed, just changed his brain, and now Liu Zhiyuan looks like Liu Zhiyuan is still standing up, but his brain is rapidly fusing with Grigory Perelman's, and even the aura on the whole person is changing.

Actually, everyone is not mistaken, but they will not know about this strange phenomenon that is happening.

"The so-called Poggaret conjecture is that if we stretch and stretch the rubber belt around the surface of an apple, then we can neither tear it off nor let it off the surface, so that it slowly moves and shrinks to a point. On the other hand, if we imagine that the same rubber belt is stretched on a tire face in the appropriate direction, then there is no way to shrink it to a point without tearing off the rubber belt or tire face. ”

"We say that the apple surface is "single-connected", while the tire surface is not. About a hundred years ago, Poincaré already knew that a two-dimensional sphere could be inherently characterized by a single connection, and he proposed the problem of the correspondence of a three-dimensional sphere (the whole of points in four-dimensional space that are a unit distance from the origin), which is a very abstract conjecture term. ”

"A single-connected closed three-dimensional manifold is homogeneous on a three-dimensional sphere", but this makes the layman of mathematics afraid, and he does not dare to study it if he is afraid. But then there's a problem, what if people in other professions want to use this principle? So I'm trying to explain what the Poincaré conjecture is in layman's terms......"

There is no stage fright, no hesitation, he is Liu Zhiyuan when he stands in front of the blackboard, and then he already looks like Liu Zhiyuan on the surface but he is no longer him, and he is already talking eloquently about Pang Jialai's conjecture when he opens his mouth.

The many people on the scene do not mean that they are all scholars, but after all, they are basically alumni and the like, so when it comes to this issue on this occasion, there is no unnecessary dissent, everyone seems quite quiet, and at this moment they are listening attentively to Liu Zhiyuan to talk about the analysis of this Pang Jialai conjecture below......

"We imagined a house like this, and this space was a ball. Or, imagine a giant soccer ball filled with gas and we drill into it to see that this is a spherical house. We might as well assume that the walls of this spherical house are made of steel, very strong, there are no windows and no doors, and we are in such a spherical house. Take a balloon and bring it to this spherical house. Any balloon will do. This balloon is not deflated, but has been blown into a certain shape, any shape can be used, but this balloon, we can continue to blow it up, and assuming that the skin of the balloon is particularly strong, it will definitely not be blown up. Also assume that the skin of this balloon is infinitely thin......"

Liu Zhiyuan kept describing it on the blackboard with a marker pen as he spoke, if the person who raised this question from the beginning was to make things difficult for Liu Zhiyuan's thoughts, and later ridiculed the view that this person was still impossible to solve this problem, as Liu Zhiyuan continued to speak, his state of mind had changed.

At least in the group of people around Lin Shao, the four eyes with eyes couldn't laugh anymore, his eyes went from disbelief to this moment, he stared at Liu Zhiyuan with admiration, and even forgot about the fact that his boss Lin Shao was standing next to him, squeezed past Lin Shao's side and approached in the direction of Liu Zhiyuan.

Liu Zhiyuan kept describing it on the blackboard with a marker pen as he spoke, if the person who raised this question from the beginning was to make things difficult for Liu Zhiyuan's thoughts, and later ridiculed the view that this person was still impossible to solve this problem, as Liu Zhiyuan continued to speak, his state of mind had changed.

At least in the group of people around Lin Shao, the four eyes with eyes couldn't laugh anymore, his eyes went from disbelief to this moment, he stared at Liu Zhiyuan with admiration, and even forgot about the fact that his boss Lin Shao was standing next to him, squeezed past Lin Shao's side and approached in the direction of Liu Zhiyuan.