The end of technology.

Chapter 39 The Very Important First Time

Today is actually a big day in China, June 2007th, the last day of the [-] college entrance examination.

Ning Ruo was in a daze watching the news sent by March in the quiet little bedroom.

Dad Ning has already calmly accepted the fact that his son will go to a sports university. Anyway, in his eyes now, his son is the best.But Ning Zhi obviously didn't have the perception that I was the best.

He couldn't even understand what March said.

"I just solved a worldwide problem?"

"Meow, yes, I still use the simplest and most convenient mathematical method to solve a mathematical problem that can be said to be both a world problem and a world problem in the field of computer theory. How is it? Does this feel very uncomfortable? Great? Congratulations, you're one step closer to becoming a general scholar in the world."

Ning Ruo couldn't help but look again at the math problem he just solved.

This is a solid geometry problem.

The main part of the question is: If more than half of the vertices of an n-dimensional cube are colored red and the rest blue, will there always be some red points that have neighbors of the same color?If so, what is the maximum number of surrounding red dots?

The description of the problem is very abstract, so he used a more present form when solving the problem.He started with three-dimensional cubes and then pushed to higher-dimensional cubes.The process of solving the problem is not too complicated. He used the Cauchy Interleaving Theorem, which March instilled in him at night, for derivation. Through this theorem, a matrix is ​​linked to the eigenvalues ​​of the submatrix of the matrix as a mathematical tool.

Then a set of 2n × 2n order matrices are constructed, and the problem is proved very simply by mathematical induction.It took about three hours before and after. The difficulty in the middle is nothing more than the need to redefine the mathematical matrix that constitutes the cube when using the Cauchy Interleaving Theorem.

Can this be considered a world problem?
But soon the cat sent another message: "Meow, the prototype of this question is: for a Boolean function f, under a certain input x (x is a boolean variable of n bits), there are more than s booleans. When the variable changes, the result will be reversed. That is, the sensitivity of the Boolean function f when the input is x is s(f, x). The maximum value s of all the sensitivities s(f, x) is called the sensitivity of the Boolean function f. Degree. Prove: There is a normal number C, yes bs(f)≤s(f)^C. And now you have perfectly proved bs(f)≤2s(f)^4. Congratulations, Ning Zhiyong The simplest and easiest to verify method proves the Boolean function sensitivity conjecture."

Ning Wei was stunned for a while, and then before he could take any action, Lord March had already read all the introductions about the Boolean function sensitivity conjecture.Ning Ruo looked at it carefully, transformed countless data in his brain, and found out that he seemed to have really solved this problem.

Ning Ruo was not prepared for suddenly solving a world problem in one afternoon.

In fact, when he saw this topic, he never thought that it was a problem in the world.I only took this question as a general training question, and now that I have successfully completed it, it is like a dream.

After all, this is not the same as his last paper.

It can be said that the last paper was forcibly instilled in him in March, but this problem was made by him through the accumulation of this month's study and inferences from one case.He was not given similar training before March, at most only the derivation process of Cauchy's interleaving theorem, which impressed him deeply.

After hesitating for a long time, Ning Yu asked, "What should I do now?"

"Meow, of course the topic you make is up to you, and you can write a paper based on the answers you just gave. Of course, this time I will only guide you, the main part needs to be written by yourself. It's just to exercise your ability to write papers. I suggest that you still submit to the last journal. After all, your last paper has not been published, and you are still a newcomer to the academic world. But to the editor-in-chief of that journal last time, you are Xiangmomo."

Ning Yu nodded, this is indeed a good suggestion.But then he asked, "Why don't you just submit to Huaxia's journals?"

"Meow, because of my understanding of your world, the current mainstream understanding is still the best results that have been recognized by foreign countries. So to conquer the country, you must first let those people in foreign countries bow their heads and submit to it is the easiest solution. Let those famous people in foreign countries hold you up first, so that you can get enough resources at home without relying on anyone, so that you can develop more smoothly. Hey, who makes your human lifespan limited? you!"

March sighed as usual.

Obviously, this kitten is very dissatisfied with the limit of human lifespan, and he has expressed his emotions about this more than once.

"Meow, you should also understand why I chose you, right? In fact, you are very talented, including spatial imagination and ability to summarize and summarize problems. I have studied you for a long time. Accurate. The college entrance examination scores are not high, purely because the systematic practice of writing questions here is not scientific. In short, the level of the teachers is too low, and there is no right way to cramming teaching!"

"Meow, so you have to believe in yourself. Not only in your own abilities, but also in my judgment. Although I always say you are stupid, compared to other stupid people, your stupidity stands out from others. Different. It's the kind of stupidity that's still smart, get it?"

Ok……

In fact, Ning Yu felt a little strange.

He could feel that Lord March was complimenting him. Although this was rare, this kind of compliment was always a little uncomfortable.

The evaluation of "really smart stupid" is probably, should, probably is a high evaluation for March, right?
After all, he had seen the kitten's vicious tongue. In his eyes, the two academicians were probably just idiots who didn't have much medicine to treat.With the comparison, I can still feel a lot more comfortable.

"Well, I know I'm not bad, I'll start writing my thesis now?"

"Meow, write, this time you write it yourself, I won't help you to revise it, but I will give you a review opinion, and you can continue to revise according to my opinion until I am satisfied. Speaking of which, I miss the time when I became the world. The feeling of the first reviewer, you know? At that time, I was the darling of countless math journal editors. They lined up, kneeled there, and said good things, begging me to help them review all kinds of math papers. Meow, so You should feel honored."

"I'm very honored! Really!" Ning Yi responded, then created a new document and began to carefully sort out the format of the previous paper in his mind.

Speaking of which, this is the real first paper in his life, no matter how much he values ​​it!

Expressed emotion.

(End of this chapter)