Chapter 344

Chapter 347

inventionesmathematicae and annals of mathematics are two top journals in the field of mathematics, which are known as "nature" and "science" in mathematics.

Both of them belong to the journals of the same district, and their influence factors are more than 10.

Although there is still some gap between the impact factors of more than 40 and "nature" and "science", they are already the two highest journals in the field of mathematics.

Naturally, the higher the impact factor, the more difficult it is for the submitted journals to be included.

Most of the papers published in "inventiones Mathematicae" are famous mathematicians in the world.

Even Professor Fang, a top mathematician in the field of Applied Mathematics in China, has never published a paper in two journals.

However, the reason why Professor Fang is determined to submit the paper to this journal is naturally full of confidence.

As for the proof process and difficulty of weak BSD conjecture, it is absolutely qualified to publish the specific proof process on it.

The signature of the paper is the common name of Professor Fang and Cheng Nuo. There is no doubt about it.

Although Professor Fang can't compare with those top math giants in terms of influence, he is also small and famous in the world. If Professor Fang signs his name, it will not prove that the paper will sink into the sea directly.

More than 100 pages of the paper were converted into PDF format and entered the official website of "inventiones Mathematicae", and Professor Fang successfully contributed.

The rest is waiting for the news.

The short term is one or two months, and the long one is half a year.

"Well, be quiet and wait for the news." Professor Fang closed the web page, took off the presbyopia glasses, turned to Cheng Nuo with a smile.

Cheng Nuo gently breathed, "finally can rest for a period of time."

Professor Fang nodded and laughed, "indeed, in the past year, you have really worked hard. Well, I'll give you a month off. After a month, I'll arrange new tasks for you

"And mission?" Cheng Nuo's face burst into tears.

"At your age, you are in the stage of absorbing knowledge crazily. If you relax, you will waste all your talents." Professor Fang opened his mouth with a smile.

Cheng Nuo nodded, "OK. So, Professor, can you tell me what my new mission is

Professor Fang coughed, "not yet."

Cheng Nuo: "er..."

Professor Fang waved his hand, "in short, you will not be idle."

"These days, you are a beauty match, and you are also finishing your thesis. You should be tired. Go back to have a rest. I will contact you when there is news about the new task."

"That's fine." Cheng Nuo nods.

…………

In a flash, half a month passed.

After a month of adjustment, Cheng Nuo from the previous busy green state to slow down.

Daily normal work and rest, early to bed, early to rise, daily in the campus, the day is also a leisurely life.

In addition to study, without the constraints of other work, time can also be freely controlled, it is simply a pleasure!

In early March, the weather changed from cold to cool.

Cheng Nuo sat in a corner of the library, against his chin, thinking.

The content of thinking is about his graduation thesis.

According to the arrangement of Professor Fang, this semester, he will finish all the undergraduate courses, but most senior students will get a degree certificate in mathematics.

And graduation thesis and graduation defense, is before graduation Cheng Nuo must face a pass.

Originally, for Tsinghua students, passing the graduation defense before graduation is not a very difficult thing. Every year, the students who can't get the diploma because of failing to pass the graduation defense can count them with both hands.

Therefore, the standard of graduation defense will not be too strict.

But that's for fresh graduates.

Cheng Nuo is a genius who directly shortens the four-year course to two-year study. Naturally, the standard will be different.

Professor Fang and Cheng Nuo have passed a gas in advance, saying that if you want to successfully pass the graduation defense, you'd better prepare a graduation thesis with your own mathematics level. Otherwise, the teachers in the defense group may not be able to let Cheng Nuo get the graduation certificate so easily.

This makes Cheng Nuo have some toothache!

A thesis with your own mathematics level?

Cheng Nuo asked Professor Fang about the subtext of this sentence.

Professor Fang told Cheng Nuo that, in a nutshell, the college hopes Cheng Nuo can prepare a graduation thesis that is qualified to be included in SCI journals at the bottom of the district.

Hiss -

Cheng Nuo takes a breath of cool air.

I Is it so powerful?It was a SCI journal paper in a district. Although it was only the SCI journals that ranked at the bottom of the list, there were five or six influencing factors.

Even some professors in Chinese universities do not mean that they can easily write a one area paper.

Other students may get a high score for a paper at the level of domestic core journals, and full marks for papers in SCI journals of two or three districts, but they can do well on their own. Only papers at the level of SCI journals in one district are qualified to be noticed by the defense group.

Well, it's hard to be a genius these days!

It seems that it is not realistic to write a SCI thesis at the level of two or three districts and pass the graduation defense in troubled waters.

In this way, it can only be positive.

This is why Cheng Nuo stayed in the library thinking about the contents of his graduation thesis.

On his desk, there is a large pile of books.

Functional analysis, methods of mathematical physics, review of modern number theory

Cheng Nuo's eyes are empty and inanimate. It seems that he is wandering in the world, but his mind is constantly running at a high speed.

There are many theories that can be used as a thesis in my mind, but the academic value is not high, far from the level required by Cheng Nuo.

Space theory of functional equations?

No way. This knowledge is too simple to have any profound views.

What about nonlinear evolution equations and infinite dimensional dynamical systems?

This is not the case. Partial differential equations are not in the field of deep research.

…………

Thoughts of Cheng Nuo, helplessly open his eyes, he sighed.

Still no idea?

He twisted his neck, picked up the book "summary of modern number theory" on the table, and casually turned to a page.

Page Title: Bertrand hypothesis.

Cheng Nuo looks from the beginning.

Bertrand's hypothesis is: for any natural number n ≥ 2, there exists at least one prime number P such that np2n.

It was proposed as a hypothesis by the French mathematician Joseph Bertrand in 1845. Bertrand verified the case within 3000000. In 1850, the Russian mathematician pafnuty Chebyshev (1821-1894) gave the first strict proof of the hypothesis. So Bertrand hypothesis is sometimes called Chebyshev theorem.

It took two hours for Cheng Nuo to read Chebyshev's concrete proof process, and then frowned tightly.

Complicated, it's too complicated!

In Chebyshev's proof process, Cheng Nuo couldn't find any other evaluation except for the complex word.

That pile of formula characters see Cheng Nuo, who has been used to it for a long time, has some scalp numbness.

Just as Cheng Nuo clears up his mood and is ready to turn back, his movements suddenly stop. In his mind, he seems to think of something

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