Chapter 125 Mathematical Black Hole
Leaving the International Mathematics Center again, Lin Xiao now had the leisure to take a stroll around Weiming Lake.
Although it is almost October, the sun is still hanging in the sky, telling the world that it is still hot.
The sparkling waves on the Weiming Lake dazzled the eyes from time to time, and the lake surface that occasionally brought up a little wind and waves also made Lin Xiao think about how fluids move.
For example, the Navierstock equation is an equation of motion that describes the conservation of momentum of a viscous incompressible fluid. Whether it is air flow or water flow, their motion can be described and predicted by the Navierstock equation.
Obviously, it provides extremely great research help to the study of fluid mechanics, but even so, people can only use it, but they cannot really know its secret, that is, the existence and smoothness of its solution.
It's still full of mystery.
"Well, mathematics and physics are really difficult."
Lin Xiao sighed with emotion, but he didn't know that other people, such as Professor Cao Chengqing and the graduate students and postdocs just now, would probably have to complain a few more if they heard what he said.
Returning his gaze to the nature in front of him, Lin Xiao could not understand all the data in it from the surface, unless there was a quantum computer hidden in his mind that could include all the particles in the lake in front of him and simulate it. Motion calculations.
But obviously, he only has a system in his mind that he usually doesn't say anything.
"Hey, auxiliary device, auxiliary device, you can't help me with anything."
After complaining, he suddenly thought of the cat at home again, "Well, it seems that I forgot to check if there was any water when I went out... I'd better go back and check."
Then he turned around and planned to leave.
However, at this moment, a girl wearing a light blue JK uniform walked towards him.
The white legs under the skirt attracted the attention of many boys around her. She was also very beautiful, and her skin looked like it could be broken under the sun.
She walked to Lin Xiao and asked with a smile: "Hello Lin Shen, can I ask you a question?"
Lin Xiao was stunned and turned around to look at the girl. Was it a question?
As for being recognized, he didn't think much about it. There were too many people in Beijing University who could recognize him.
"you say."
He didn't refuse and said directly.
"It's a functional analysis problem. Lin Shen, you should be able to solve it easily, right?"
The girl picked up the notebook in her hand, and there was a question written on it in delicate handwriting.
[If T is an unbounded closed operator on Banach space X, prove that the domain of T can only be dense in x at most. 】
Lin Xiao took a brief look and then gave the girl a strange look: "You're not from the mathematics department, are you?"
"Ah? I am! I am in Class 2 of the mathematics department of my junior year." The girl was stunned and replied.
Lin Xiao glanced at her with pity and said directly: "Proof by contradiction, if T is a closed operator defined on the entire space A bounded closed operator from X to
When the girl heard this, she immediately showed an expression of admiration on her face and clapped her hands: "Wow! As expected of the Lin God, he made it so quickly!"
Lin Xiao shook his head: "Anyone from the normal mathematics department should be able to do it quickly. You said you are from the mathematics department. You must have failed many subjects before, right?"
girl:"……?"
Is there anyone who chats like this?
Attack people as soon as they come up...
She actually failed several subjects.
She kept a forced smile on her face and said: "Lin Shen, you can even guess this? You're really amazing!"
"There's no need to guess. You won't be able to solve this problem if you study hard." Lin Xiao waved his hand, "Okay, I wish you... good luck."
I hope you graduate successfully.
Then, he will leave.
When the girl saw Lin Xiao and was about to leave, she quickly said: "Lin Shen, since I'm so bad at math, can you help me with some tutoring?"
Lin Xiao walked faster, "No, I have to go back and take care of my cat. If you have any questions, you'd better ask the teacher."
Just kidding, she actually had to ask herself a question that could be answered in such a sentence. If she was being tutored, she would probably go numb.
Isn’t this a mathematical black hole? He even came over to learn mathematics.
Gotta stay away as soon as possible.
But when she saw Lin Xiao leaving without mercy and saying that she wanted to take care of the cat, she couldn't believe it for a moment. Is taking care of the cat so important?
Or is she not dressed pretty enough today?
But looking at Lin Xiao's retreating figure, she had doubts about her appearance for the first time.
…
Lin Xiao, who returned to Yanbei Garden, reached the door of the room and was holding the key to unlock it. The sound of the key seemed to attract the little creatures inside, and then he heard a 'meow' coming from inside.
He sped up and opened the door.
Mimi was already squatting inside the door, raising her beautiful crystal blue eyes to look at him. Her beautiful face made people couldn't help but touch it.
Lin Xiao knelt down and picked it up directly.
He has now mastered the technique of holding a cat, which is to stretch one hand to its chest, press its butt with the other hand, and then pick it up. This way, the cat is very comfortable and people can feel the fur of the cat. My body is filled with the taste in my chest.
"Mimi, do you miss me?"
He lowered his head, took a sip on Mimi, and then carried her into the bedroom.
Its food bowl was placed in the bedroom. After looking at it, there was indeed no water, but there was still cat food. He added a little water and let Mimi drink it. Then he sat down at the desk, turned on the computer, and started Put together your own papers.
[Relationship between energy storage function and medium propagation speed]
[Abstract: This paper demonstrates that the dominant behavior of the energy storage function of any expansion strain is determined by the propagation speed of the medium through the limiting effect of a type of zero energy condition on the energy storage function...]
This paper is not long. As Tang Qing said before, it can be completed in just a few pages.
So he sorted it out very quickly.
Not long after, he finished sorting it out, and then logged into the official website of "AML" and found the submission method and format requirements. He first modified the format, and then looked at the submission method and so on.
"Can I send it using ArXiv?"
Seeing the prompt above, he thought about it and entered ArXiv.
ArXiv is a preprint website that mainly provides a place for authors whose papers have not yet been published to share them in advance. It is also a way to take advantage of others' mistakes. After you have made your own results, publish them here. If it happens to be If someone else makes the same or similar results after a few days, it will naturally not be published, so ArXiv can also be regarded as a kind of copyright occupation.
However, this has resulted in ArXiv being flooded with various low-quality papers. For example, if a certain expert predicts that a certain direction will become a hot research field in the future, someone will preemptively publish a lot of papers in this direction on ArXiv. Low-quality papers require those who do serious research later to cite these papers if they want to publish them. This has also led many scholars to denounce this current situation.
Lin Xiao didn't care so much. After quickly registering his account, he uploaded the paper.
Then, he started walking around here.
"Huh? Goldbach's conjecture?"
Suddenly, he noticed a paper titled "The Distribution of Prime Numbers".
He looked at the abstract and was immediately shocked, [So the twin prime conjecture is correct...so Goldbach's conjecture is correct].
"Good guy, isn't this another civilian contestant?"
He couldn't help but open it and take a look, and found that it was full of mistakes.
"There are also fakes on ArXiv."
He shook his head, and then thought about Goldbach's conjecture.
During previous exchanges with Professor Xu Ji, he became interested in Goldbach's conjecture.
As Professor Xu Ji said, Goldbach's conjecture is a problem of number theory and prime numbers. As a person who has solved two problems of number theory and prime numbers, he is indeed interested in this kind of world problem.
He took out a piece of scratch paper and a pen, and wrote the expression of Goldbach's conjecture on the scratch paper.
【p1+p2=m】
That is, any even number greater than 2 can be expressed as the sum of two prime numbers.
In a letter to Euler in 1742, Goldbach proposed that any integer greater than 2 can be written as the sum of three prime numbers. He asked Euler for advice on this issue, but Euler couldn't understand it either, and asked in his reply The Goldbach's conjecture that is commonly recognized in modern times is the Goldbach's conjecture about even numbers above.
As a result, this inadvertently raised question once again became a question lingering in the minds of every scholar in the field of mathematics. In this way, this question got rid of Euler and Chen Jingrun, and it has survived until now.
Of course, there have been many achievements in the process, such as "1+2" proved by Chen Jingrun, and the weak Goldbach conjecture thoroughly proved in 2013, that is, any odd number greater than 7 can be expressed as three odd prime numbers. Sum.
However, Goldbach's conjecture requires even numbers, and such a mere transformation of parity has brought the mathematical community to a complete standstill in its research. So far, no relevant results have been produced.
Lin Xiao thought about it briefly, and finally chose to read other people's papers for inspiration.
So he directly found the 2013 paper that proved the weak Goldbach conjecture and read it.
In this way, time passed slowly.
…
New York, USA.
Editorial Department of "Applied Mathematics Letters".
"I received another paper. Let me see which country it is from."
Editor Albert saw the message popping up in the background of the website and said something.
"I bet one dollar that it's from China."
Another editor, Mike, responded with a smile.
"bingo! Congratulations, you won the bet. You can get your dollar back."
Albert said with a smile that as the 8th journal among the 265 journals in the same field, they also often receive various submissions. Among them, submissions from China are the most, probably from China. There, they pay more attention to the condition of review speed.
Then, he opened the paper.
