The peak of human wisdom,

Xu mang has reached the top intelligence level of the system, but he seems not to notice any sense of intellectual improvement. He searches the inventory in his mind and finds that he is still some knowledge, which are copied from the first four levels.

Is there any book in the world that human beings have not yet known? The knowledge above is the code that human beings can't crack?

Xu mang thought about this problem. He felt that he had been fooled by the system. He tried his best to upgrade to level 5, but there was no change in the result. He did not know where the force of level 5 was. According to the truth, level 4 is the top of the existing scientific field, and level 5 is the top of the universe.

The result...

is just bullshit!

"What's the situation?" Xu mang is lying on the bed of the hotel. At the moment, the whole person's mind is blank. He doesn't know what is inside. He falls asleep silently. Five minutes later, he is surprised. He takes out his notebook and finds the NP complete problem.

This is a non deterministic problem about the complexity of polynomials. Its difficulty is known as one of the seven major mathematical problems in the world. Some calculation problems are deterministic, such as addition, subtraction, multiplication and division. As long as the formula is derived and step by step, the results can be obtained.

But some problems can not be directly calculated step by step, such as the problem of finding a large prime number... The answer to this kind of problem can not be directly calculated, only through indirect guess to get the result.

This kind of problem usually has an algorithm, can not give the answer directly, but can give whether the result is correct or not. This kind of problem is called polynomial non deterministic problem. If all possible answers of this problem can be checked whether they are correct or not in polynomial time, it is called complete polynomial uncertain problem.

In fact, all the non deterministic problems of complete polynomials can be transformed into the problems of logical operation. Therefore, a kind of conjecture is born, whether there is a deterministic algorithm for such problems.

Directly calculate the answer in polynomial time?

Xu mang knows that

in fact, as early as ten years ago, a professor announced that P! = NP... But less than two weeks later, mathematicians gave the answer, and this paper could not be established.

In another area of computer science, most computer science experts don't believe in P = NP, but a computer science expert from MIT wrote a paper listing ten reasons why it doesn't exist.

Among them... Xu mang is very impressed...

if P = NP, the world will become fragmented, all creation will become no interwoven, there is no fundamental gap between solving problems and recognizing solutions... Anyone is Newton, everyone can be Gauss or Euler.

Indeed,

if this problem is solved, it will completely subvert the current social technological and economic foundation... But if this problem is solved, it may become a more significant innovation promotion than the invention of the Internet, which is not a joke.

"Alas...

" relying on... I thought that when my intelligence was upgraded to level 5, there would be a new breakthrough, but there seems to be no change in the result... "Xu sighed blankly, and he felt a little remorse. If the upgrade card was applied to physical strength, would Xiaoman still be rampant?

No!

You're kidding... Twice a year, once half a year!

...

about Xu Mang's winning the Nobel Prize in physics for the third time has caused a great sensation in the world. After all, this is an unprecedented event. No one has ever reached such a height before, and I believe that he will not surpass Xu Mang in the future.

For China... When Xu mang again occupies the focus of the world's summit, it belongs to the highest peak of Chinese science, three Nobel physics prizes, one fields prize, one Abel prize and so on. He is a scientist among scientists, and he is a legend in legend.

However,

even legends will say goodbye, but Xu mang once said... He can still hold on for half a century. Maybe he is not perfect in the eyes of others, but he is complete enough... No one can do this.

On this day,

Xu mang returned to Mordor with honor. There was no welcome occasion, and no one knew that he had come back. Just like before, he left quietly and came back quietly with sunglasses, masks and hats. No one would care about this serious young man, who is the greatest scientist in the world.

Chen Xi had been waiting at the airport exit for a long time. When he saw Xu mang alone, he felt helpless. To tell the truth, many people in the society compared Xu mang with those stars, even directly compared fame and wealth.

Too shallow!

For Chen Xi, this is insulting brother Xu mang. As a senior manager of Xuyang technology company, Chen Xi has dealt with many scientific research workers. Those people are engaged in research and learning. Most of the time, he devotes his whole life to an unknown thing.Their stage is the research laboratory and laboratory, where there is no spotlight and fans. Their happiest moment is that their research has achieved results.

Sometimes,

only they applaud themselves, because few people know what he is doing, but they are very happy because he proves his value with his achievements.

"Brother

"I found that every time you come back, you are all alone..." Chen Xi took over Xu Mang's suitcase and said with a smile: "if there is a problem, this is the big event. Last time you were pushed by others, the company almost went bankrupt."

"..."

"that was an accident." Xu mang waved his hand and said with a bitter smile, "take me to dinner first... I'm starving to death."

"Good!"

After a while,

the two people came to a very high-end cafeteria. Xu mang first made a bowl of fried rice with eggs, and then he was full. He was surprised to see the people around him. After all, the restaurant charges a lot, so he ate a bowl of fried rice with eggs.

If in the past... Xu mang may open the system to untie the belt and eat like crazy to the death, but now he can't do this anymore. The position determines a person's behavior. Many things Xu can only look at or think about.

"..."

"brother, you are too much!"

"Began to threaten what hunger... Results spent nearly 1000 yuan, ate a bowl of egg fried rice." Chen Xi saw Xu mang sitting on the chair playing with his mobile phone. For a while, he couldn't accept it. He said helplessly, "brother... Are you at home like this? My sister cooked a lot of dishes for you, but you only ate instant noodles? "

"Crazy?"

"How can I dare to do this in front of your sister, and do you want to live?" Xu mang said in a bad mood: "lend me some money."

"..."

"I dare not... My sister and I have been warned by my sister. If I lend you another penny, we will look good to both of us." Chen Xi shrunk his head, carefully said: "Chen Fan brother, they have been warned, as long as you dare to give you a penny, they will collapse their company."

I...

lying trough!

What's the situation?

Xu mang face black line ground says: "I depend on... This Niang... Have not been beaten?"

Chen Xi curled his mouth. As the man who has been following Xu Mang and Xiao man Jie all the time, he knows the best about the couple. As long as sister Xiaoman gets angry, brother Xu can only sit aside and nod and bow.

However,

as long as brother Xu mang has a little incident, sister man will become very nervous.

After a long time,

Chen Xi sent Xu mang to his home, and left in a hurry. At the moment when he opened the door, Xu Yang and Xu man, who were watching TV, turned their heads in a hurry. As a result, they saw their father standing at the door, and the two little guys were not calm. They scrambled down from the sofa and ran to dad with their little buttocks twisted.

"Ouch ~"

"my little baby... Did you miss Dad?" Xu mang asked with a smile.

The two brothers and sisters didn't speak. They proved how much they liked their father by their actions. They gave him a few kisses on his face, and then their smooth little face rubbed his father's cheek.

"..."

"are you back?" Yang Xiaoman came out of the kitchen and saw that the two little guys were so tired of their husbands that he felt very angry. He said, "the two little bastards... Only their father and mother are working hard to make money. They don't appreciate me at all."

Facing his jealous wife, Xu mang can only smile. He can't decide who the child likes, but the child won't lie.

Then, Xu mang accompanied the children to watch cartoons, but his mind was full of questions about the five levels of intelligence of the system. What should he do to reflect the concept of five levels of intelligence.

At this time,

Xu mang took out his mobile phone, opened the e-mail app, found the e-mail sent by the former University of science and technology, and opened it again to read the issue of the thousand kilometer quantum key distribution.

At present,

in fact, this problem can not be solved. At least, Xu mang thinks that it is impossible to solve it when he is at level 4 of intelligence. However, the reason why he said to solve it in a week is completely based on his ability after upgrading. As a result...

this...

what should I do?

How to bring back the cattle that have been blown out?

"System?"

"What's special about level 5 intelligence?" Xu asked in his heart.

[automatically receive new knowledge]

[conduct comprehensive analysis of current problems]

[requirements: reach the top level in the current field]

WTF?

What the hell?

Brother also did not receive what knowledge!

At this time,Looking at the materials sent by Professor Yuan, Xu mang is deeply puzzled... Quantum communication belongs to a new research field combining quantum theory and information theory. Quantum theory... Is one of his strengths, while information theory belongs to the category of statistics. In this regard, Xu mang is still at the expert level, and he is still a little far away from the top.

"Wife!"

"Do you know information theory?" Xu asked.

"Go away!"

"I don't know!" Man, who is doing yoga on the edge, gives him a vicious white look, and then continues to do the next move.

However, Xu mang quietly picked up the tablet computer on the tea table and bought several professional books on information theory on the Internet. However, he just opened this book, and suddenly a new world happened.

Sleeping trough!

What a force!

......

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