After bidding farewell to the great gods of chemistry, Joey went to the circle of mathematician Professor Carl Theodor Wilhelm Weierstras.

After learning yesterday that a mathematician would come to the salon, Joey deliberately recalled his advanced mathematics knowledge in his previous life, especially the courses he had studied: mathematics, advanced algebra, probability, statistics, ordinary differential, and random. After some reminiscence, he found that he had left a lot of basic knowledge, and Joey felt that he maybe, maybe, probably could have some common topics with these mathematicians, and he was very confident.

The mathematicians' circles seem to be much quieter than the others, but that doesn't mean they haven't noticed Joey's performance just now. Seeing Joey coming over, most people stopped to discuss and looked at Joey.

Seeing Professor Carl Theodor William Weierstrass welcoming him with a smile, Joey hurriedly bowed respectfully, "Hello, Dear Professor Weierstras. ”

"Hello, Your Highness the Prince." Professor Weierstrass greeted with a smile, "Please let me introduce you to my students, this is Dr. Kovalevskaya, this is Professor Schwarz, Dr. Levler, Dr. Schotky, ....."

"Sir, you have so many students! And there are also female doctors. This was the first impression that math circles left on Joey, and Joey was immediately dazzled by the long list of names of Professor Weierstrass students.

"Your Royal Highness the Prince, I am discussing a small issue in integral science with my students, I would like to finish discussing this issue with them first, and then invite you to speak, Your Highness, do you think it is okay?" Professor Weierstrass asked with a smile.

"Dear Professor Weierstrass, you can call me Joy if you may. Sorry to interrupt your discussion, please continue. Joey took a slight step back, quietly listening to the professor's discussion with his students.

As the discussion between the professor and his students continued, the more Joey listened, the more frightened he became, "Is Professor Weierstrass talking about the Riemann integral in analysis?" I think I'd better be .....cautious when I wait to talk about the scores. Are they talking about complex function theory now? ”

"Oh my God...... I remember, Professor Weierstrass was the founder of analytics.... I also studied economic psychology, and I forgot who the grandfather of analysis was! It's too embarrassing, forget it, I'd better shut up and don't say anything I know about high math, otherwise I'm really going to be embarrassed to wait. Joey quickly recognized the reality and wisely decided to keep his mouth shut.

After ten minutes of discussion, Professor Weierstrass said apologetically to Joey, "Your Royal Highness, I'm sorry to keep you waiting. ”

"Dear Mr. Professor, you should call me Joey." Joey rubbed the sweat from his palms, "I'm honored to be able to sit in on your lectures. Today, I came here mainly to represent my mother's foundation and to make some support for the mathematical community. ”

"Oh, Joey. Your father, Crown Prince Frederick, has already told me that the Imperial Ministry of Economics will cooperate with the Imperial Ministry of Education to increase investment in the field of mathematics. Professor Weierstrass said with a smile

"Dear Mr. Professor, unlike the Imperial Government's investment, the Crown Princess Victoria Fund will focus on the practical application of mathematics in the social field, rather than on state-funded theoretical research." Turning to Professor Weierstrass students, Joey continued, "The Crown Princess Victoria Fund will fund researchers who are committed to applying mathematics to industry, construction, manufacturing, and even business and management. ”

"Your Royal Highness the Prince, we can understand the application of mathematics to industry and construction, and the manufacturing industry can barely understand it, but you said that the application of mathematics to the operation and management of enterprises is very new, can you explain it?" One of Professor Weierstrass students asked.

"Hello, Dear Dr. Kovalevskaya." Joey recognized the professor's only female student, "Before I answer your question, I want to tell you an interesting story." ”

"A long, long time ago, around the time of the Holy Roman Empire, there was a place that was hit by a natural disaster, and the king ordered the lords to go to the relief of the disaster. When one of the lords went to inspect the food shop where the grain was distributed, he grabbed a handful of sand and sprinkled it in the pot with oatmeal. The other nobles in the same group were curious about why the lord did this, and they all asked, "What are you doing here, lord?" ”

The lord replied that the truly hungry people would not care if there was sand in the porridge. But the crooks and the rich who come to eat and drink can't swallow this oatmeal mixed with sand, and only in this way can the most needy people survive. Joey paused for a moment and continued.

"On the face of it, if the oatmeal for free disaster relief is not subject to conditions, and the rich, poor and swindlers can enjoy it at will, and the oatmeal porridge that the lord can provide every day is so much, then it is bound that some poor people will starve to death because they can't eat it."

"But can you consider the deeper math behind the lord's actions? Is it possible to build a mathematical screening model for this? Joey asked, looking at everyone.

"The first variable in the model is the rich and the crooks, because they can disguise themselves as poor, and the poor can't disguise themselves as rich, and the oatmeal that the lord can provide is the total amount." Someone is starting to try to build a mathematical model.

"The weights in the model are the sand in the oatmeal." Someone else added.

"This weight cannot be infinite, and the tipping point is to make oatmeal just in a state where the poor are willing to eat it and the rich are not willing to eat it." Someone went on to add.

"But this mathematical screening model is still inefficient at the bottom. It is still not possible to avoid the losses suffered by the poor, after all, they have not eaten pure oatmeal porridge in the true sense of the word, which has sand in it! Someone retorted.

"You're right, the constraints of this model are only for the bottom layer, so how do you say this mathematical model should be changed? How do you prevent the rich and crooks at the top of the model from preying on the poor at the bottom? Some people ridiculed each other.

"If this model is to be done well, then the constraints should be opposite! The fundamental reason is that the lords did not distinguish between the poor and the rich! This is lazy government! Someone shot back dissatisfied.

"Ladies and gentlemen, His Royal Highness the Prince is just giving an example to illustrate that there is mathematics in economics, and it is not for everyone to quarrel." Professor Weierstrass waved his hands to signal silence, trying to quell the quarrel among his students.

"Dear Professor Weierstrass, and professors and doctors, you are right. This mathematical model both explains the nature of the lord's economic activities and allows everyone to see the flaws in his behavior. That is, the lord did not seriously fulfill his duty to distinguish who was poor and who was rich, and the poor at the bottom eventually suffered. Therefore, if you want to build a perfect mathematical model of the relief behavior of the lord, then there must be an external constraint mechanism in the opposite direction, which requires fairness. Joey added with a smile.

In Joey's previous life, there were many poor relief institutions based on this mathematical economic model, such as not building independent toilets in low-rent rooms, but building public toilets in the community, and so on. The aim is to set up certain screening conditions to prevent the rich from encroaching on the interests of the poor. Of course, no matter what method is used to prevent it, it is always the poor at the bottom who will suffer in the end, which is probably the essence of this world. It is only by passing laws as much as possible to maintain fairness that social injustice towards the poor can be weakened.

"So, I can now answer the question just asked by the honorable Dr. Kovalevskaya, that all the essence of economic activity in this world can be explained by mathematical models." Joey nodded to the female doctor.

"German economics is developing rapidly, but economics as a discipline has not yet been closely linked with mathematics, which shows that German economics is immature and urgently needs the help of mathematicians. I think advanced mathematics will be very important for economics, especially for economic management. The idea of the limits of higher mathematics, the idea of abstract induction, the method of statistical analysis and the principle of operational planning will no longer be a tool, but will become the key to solving economic problems. Joey announced loudly.

"I hope that from the German universities, the blue-blooded elite who shocked the world can also come out!" Joey said loudly.

Before World War II, the Americans relied on the crazy anti-Jewish activities of the Austrian mustache to attract a large number of famous German mathematicians to the United States, so that the Americans could smoothly apply mathematics to the field of economic management, and the famous Harvard Blue Blood Ten Masters appeared. This kind of stupidity must not happen again in Germany, and Germany must also have its own blue-blood elite to apply higher mathematics to all areas of the economy! Let Germany lead the revolution in the world economy! Joey secretly clenched his fists and swore.