Lu Shanmin is already familiar with what a function is, a cluster A, give it a rule f, and get another cluster B, which is a function.

But today Ye Zixuan told him to draw a line casually, and it is a function.

Lu Shanmin was puzzled, the lines he drew casually had no rules at all, and he couldn't find a law at all, how could it be a function. Ye Zixuan's jumping thinking made him completely unable to keep up with the rhythm.

Looking at Lu Shanmin, who was at a loss, Ye Zixuan held her cheek with one hand and looked at him with a smile.

Lu Shanmin's serious thinking looks very good, very similar to his father's appearance when he was working seriously.

The bridge of his nose is very high, like a bulging hill, his eyes are very bright, like stars in the sky, his lips are slightly thick, his teeth are fresh, his complexion is slightly dark, and his facial features are clearly angled, much like a popular male star on TV.

Ye Zixuan could see it, and secretly thought to herself, she looked very handsome.

Lu Shanmin thought about it for a long time and couldn't figure it out.

"Can a function without a law be called a function"?

Ye Zixuan snorted, "Then you can call it a function that can't be called."

"There is a view in the mathematical community that there are laws in this world, from dust to the universe, which can be depicted in mathematics, and I believe this view."

"The so-called lawlessness is actually just that we humans have not yet discovered that law, Ramanujan is a person with super intuition, and his incomparably complex formulas are directly derived without any calculations, because he keenly captures the laws that ordinary people cannot grasp."

He pointed to a random line drawn on the paper, "This line cannot be expressed by a specific function, just because we haven't found its law yet, it doesn't mean that it doesn't have a law."

Lu Shanmin nodded thoughtfully, thought for a moment and asked, "Does such a function make sense?"

"Classicism and intuitionism in mathematics have been debating this issue for a long time, and now these grotesque functions are called generalized functions, but the definition of generalized functions has been debated endlessly, and there is no unified definition. ”

"Everything in this world is composed of laws, it is of course meaningful to understand and explore these laws, generalized function theory is also called distribution theory, if you find the corresponding law, you can solve many random variable problems, such as economic theory, involving thousands of random variables, if you can simulate it, you can avoid economic crisis in advance, which is conducive to economic regulation, and also such as mass, point charge, dipole, instantaneous striking force, instantaneous source and other physical quantities with it is not only convenient, but also more clear physical meaning."

Lu Shanmin listened to yes and no, and there was a hint of understanding, but he was still confused.

Ye Zixuan raised her head and said proudly: "I am studying this problem now, if I can make a certain breakthrough, hehe, I can become the first female mathematician to win the 'Fields Medal'."

On the east side of Parkway Park, more than a dozen fierce people stood on the lawn.

Masson is also a little famous in the Parkway area, but it is much worse than the bastards of the same period. More than ten years ago, many of the people who mixed together became bosses, some opened bars, some started businesses, and they all became the bosses in his mouth.

He is the only one who is still living on collecting some protection money, but in recent years, with the improvement of the legal system and the improvement of people's awareness of the legal system, it is difficult to even receive protection money.

I think that when Changzan had not unified Zhigang Avenue, Zhigang Avenue was full of flowers, and at that time, he watched the scene for three or four bars, and he had to call Brother Sheng when he went in and out.

Later, Chang Zan unified Zhigang Avenue and incorporated some people, but most of them were driven out, and he was one of them. However, Chang Zan is not only a person, but also a damn rich, so he can only bury his resentment in his heart.

Now the only income is to take on some private work, fight for others, smash a field, etc., which can be regarded as the lowest level of the lower nine streams.

In the past two days, the middleman introduced a big business, and I don't know which rich son this person offended and bought one of his hands for 300,000 yuan. As long as you don't get killed, someone will come forward to pay for the soup and medicine, and you will be arrested and imprisoned for one year and give 100,000 yuan.

Ma Sen didn't have the heart to sympathize with that person, he only knew that this was a big pie that fell from the sky, and he was not afraid of an accident, so he just found two brothers to go to prison for two years, 100,000 yuan a year, and without his mobilization, there were people rushing to eat in prison.

A small man trotted to his side from a distance.

"Brother Xiaoma, see clearly, there is only that kid and a woman in the gazebo, and there is no one in the surrounding visual range."

Ma Sen showed a hideous smile, "Cheer me up, the middleman said that the kid knows martial arts, stay for a while except for his head, and give me a fierce greeting in other places, Lao Tzu treats people and things the most fairly, and whoever is the most ruthless in a while will leave him the opportunity to eat in prison."

The dozen or so people behind him suddenly seemed to be beaten with chicken blood, for them, this is a great good thing, most of these people have been in the game, and they know better than the judge how to judge a fight and how long to go to prison. If a person is injured, as long as he pays the medical and maintenance fees in full, plus intimidates the beaten person, he will say to the police that he is actively provoking trouble, and he will be imprisoned for one or two years at most.

easily 100,000 yuan a year, all of them are red-eyed, and they can't wait to go to this prison immediately, and even several people have made up their minds not to run away after abolishing that person for a while, waiting for the police to arrest them.

On a tall building outside the park, Meng Haojun put down his binoculars and showed a cold smile on the corner of his mouth.

"Why don't you do it yet"?

Next to Meng Haojun stood a Humpty Dumpty man who was only about one meter six.

The fat man smiled, "Meng Dashao is not in a hurry, this person has a bodyguard in the park, it should be the idea of piercing his hands, but looking at his appearance, he should not have undergone special bodyguard training, and his consciousness is not enough, he has been wandering around the park, and now he is very close to the distance from that person and is turning to the west of the park, and when he turns to the west corner, he is farthest away from the pavilion, and he is more stable when he is doing it."

Meng Haojun smiled coldly, "You're quite professional!"

The fat man arched his hand, squeezed his face into a pile of fat, and said with a smile: "This is the bowl of rice we eat, Meng Da is rare and well-informed, and has rich connections, and he will have the opportunity to introduce me more business in the future."

"Let's talk about it when you finish this, this person knows sanda, can you do it?"

"Hehe, Meng Dashao rest assured, this man named Ma Sen is a well-known ruthless person in Parkway District, and his subordinates are all a group of outlaws, absolutely no problem."

Lu Shanmin was immersed in thinking about the generalized function that Ye Zixuan talked about, when a slight crackling and chaotic footsteps disrupted his thoughts.

The hunter's ears were extremely sensitive, and Lu Shanmin frowned and suddenly got up.

Ye Zixuan looked at Lu Shanmin strangely, and saw that he looked cautious, his eyes showed fierceness, and he was so frightened that he chuckled in his heart.

"What's wrong with you"?

Lu Shanmin lightly left a sentence of 'wait for me here, don't go anywhere', and said that the whole person rushed out of the pavilion.

Lu Shanmin thought that most of these people were coming for him, and instead of sitting in the pavilion and waiting to be killed, it was better to take the initiative to attack, so as not to be burdened by Ye Zixuan's fear.

Running in the direction of the footsteps, I turned a row of trees and saw a dozen men running towards me.

The men also saw him, and immediately their eyes lit up with gold, and they saw him as if they were seeing glittering gold.

Masson yelled, 'Give it to me.'"

More than a dozen people instantly pulled out the steel pipe from their waists and rushed towards Lu Shanmin.

There were still ten meters apart, and Lu Shanmin exerted force under his feet, raising the speed to the fastest, like an angry bull, rushing into the crowd in an instant.

"Boom", the first person who was hit by Lu Shanmin's shoulder flew backwards, and the two or three people behind him were directly knocked down.

Ma Sen was taken aback, but he was only stunned for a moment, and then he swung the steel pipe and smashed it at Lu Shanmin.

"Bang bang bang", the unarmed Lu Shanmin was hit several times in the back and arms in an instant.

Lu Shanmin raised his foot and kicked a person out.

Then he rushed forward suddenly, wanting to continue running to the east, which was very close to the pavilion, and he didn't want the war to affect Ye Zixuan.

However, as soon as he took two steps forward, he was forced back by two machetes on his face.

Although these people don't have any martial arts foundation, they obviously often fight in groups, and a group of people actually cooperate very well, and they surround Lu Shanmin in the center.

Lu Shanmin tried his best to avoid the two machetes and the vital parts, and let the rest be hit by the steel pipes.

A straight punch hit the face door of the person who burst in next to him, directly put the other party down, and then hit a steel pipe with a hard fist, and slammed a person down.

Between breaths, Lu Shanmin had already put down five or six people, thinking that these rabble would be shocked by their own momentum, but they didn't expect that these people had no intention of retreating, and they were all excited, just like the Japanese devils saw the flower girl, desperately moving forward, and even among the people who were put down just now, there were two people who gritted their teeth and stood up tremblingly and continued to rush over.

Lu Shanmin was secretly frightened, this was a group of outlaws who did not want to die. But he is not worried, now he is no longer the Lu Shanmin on Minsheng West Road, and he doesn't care about these dozen people.

Two steel pipes came head-on, Lu Shanmin snorted coldly, grabbed it with both hands and pulled it hard, and grabbed the steel pipe.

With two steel pipes in his hand, he suddenly became like a tiger with wings, where is his strength that these ordinary people can afford, bang a few sticks, almost a stick fell down.

This is still his leeway, and he did not greet the vital parts.

Despite Lu Shanmin's might, a group of people still did not flinch in the slightest, and after being defeated, all those who could stand up with all their strength struggled to stand up and continue to fight.

Ma Sen became more and more anxious, he didn't expect that more than a dozen of his people would still have the upper hand, but he didn't think about giving up, and the dozen or so people under him didn't think about giving up, 300,000, this is not a small amount, there has been no business for a long time, and the brothers are so poor that they are about to do robbery, this time the task must be successfully completed.