Future library

As a Star Warlock, a third-level Star Warlock, Wang Linghe's job as a messenger is entirely out of his appreciation for Cheng Jinzhou, and it does not include a responsible attitude towards society, the world, and mankind - Star Warlock Talent Too lazy to meddle in the court's business, even if someone dies.

Although it was something he didn't care about, the message of a few words shocked Old Mrs. Cheng into a sweat. The family's foundation is in Shaonan. If the court is blamed for this, the Cheng family will suffer the most.

There was no need for Wang Linghe to elaborate. Mrs. Cheng had already made up her mind to send Lord Star Warlock away. She dressed neatly and called the housekeeper over with a cane in hand.

The butler has been serving for 50 years. He is older than the second-generation sons. He also has white hair and is neatly dressed. At first glance, he looks like a retired old-fashioned knight. To be honest, the status of the chief butler of the Cheng family is higher than that of the knight.

His straight back was in sharp contrast to the hunched-over second housekeeper. Even though the snow in the yard was very slippery, he was still walking in a standard square step, wearing a standard gown. There was almost no change from usual days. .

Mrs. Cheng looked majestic and said in a solemn tone: "Go to Cheng Feng and fetch two people. Tell the people below that no matter what happened yesterday or today, whether it is money, rice, oil, salt, or weddings, no talking or asking. No talking is allowed, anyone who dares to chew his tongue will be killed immediately."

The tone and semantics are like the sunset after the rain, pressing deeply on the horizon.

The maid next to her was so startled that she almost dropped the towel in her hand to the ground, her face turned pale with fright.

"Ah - yes." The butler usually behaved well, but at this moment he couldn't hide his surprise and hesitated slightly. The execution of servants by aristocratic families has always been a gray area. Except for the royal family, few people speak out openly. Generally speaking, the death is usually caused by the servant who can't stand it, rather than the master who is determined to kill.

The old lady who followed Cheng Wenzheng and was stationed in the military town in her early years was familiar with all three of them. Without any hesitation or pause, she continued to speak sternly to the Cheng family members around her: "The order just now is also valid for you. No matter where it is. Anyone who dares to talk nonsense should be careful."

Those who gathered were all the legitimate sons of the fourth branch of Qingyue Yuanlong. As long as they were restricted, the bastards had no say at all.

Liu Qingshuang, who lived very close by, was also summoned. She looked at her toes thoughtfully and thought: In this way, it will not be easy for the court to know what happened in Shaonan City.

Everyone was obedient, but the old lady continued to speak: "Cheng Feng, take some people to the city wall and bring Jinzhou back."

Cheng Feng was the captain of the guard. He said "yes" loudly and ran out despite the wind and snow, in a typical military manner.

Snow falls intermittently, sometimes as snowflakes, sometimes as snow particles, clusters like marshmallows that have been left out for a long time.

The snow that fell on the ground was piled up loosely, occupying the streets, gardens, and rooftops. Some young people tried to fight it, but eventually gave up and let it block the door like a wall.

The only thing that expresses gratitude at this time is the windows, and their importance is realized to the greatest extent, surpassing the door that cannot be pushed open, and the peephole that lacks color.

A long night.

In order to help the homeless people get through the first 12 hours and prevent them from falling dead or taking risks, the porridge shacks set up in the four cities have never stopped, and the rich and nobles also try their best to collect bedding cotton. By noon of the next day, thousands of stones of food had been turned into energy to keep out the cold, most of which came from the trading platform.

It is no exaggeration to say that Cheng Jinzhou used his own credibility to work hard to keep his father's official title. Otherwise, let alone a riot, even if too many people died, a bad review during the civil service exam would be the end of his career.

Of course, this effort is worth it. Just the beams and other materials from the collapsed house would allow him to recoup a lot of his money, and the rest was far from a problem.

There is a huge difference between being born into a wealthy family and being born into a poor family, and having no money.

The victims who had returned to peace began a new life. The officials of the state government quietly took over the government work and worked like real managers, but everyone had different thoughts in their heads. Few people know exactly what happened, which is the main reason why the prefect still has not received any official reprimand.

Also returning to peace is the long-lost Father-in-law Sun, who has just ended his chaotic relationship with several other planets, making him look a little weak. The idle sunlight has no effect on the thick snow.

While the nobles were busy working on their fiefdoms, Liu Kuang quietly came to the door.

The status of a star warlock is extremely high, far beyond the reach of local nobles, let alone Cheng Jinzhou.

The latter felt strange, but he hid it well when the servants were serving tea and water.

Liu Kuang always paid attention to Cheng Jinzhou's expression, but the first person to speak was the star warlock apprentice Xiang Xin. She almost sat down and said: "Mr. Cheng, I have two more questions to ask you."

"Oh?" Cheng Jinzhou looked at Liu Kuang strangely. When he was studying for a Ph.D., if a doctoral student asked another supervisor a question about the same major in front of his supervisor, it would be tantamount to a slap in the face. The consequences would be equivalent to sleeping with the boss's wife, and the consequences would be second only to sleeping with the boss's woman. sleep.

Liu Kuang smiled very kindly, picked up the tea and took a few sips, then waved his hands and said: "In recent years, I have mainly studied coordinates. The Euclidean geometry you have learned is similar to the previous generations, but it is also different. The subtleties are , it’s up to you to explain it, if you don’t mind, let me listen to it.”

This was the first time he called himself an old man in front of Cheng Jinzhou. This word is actually a kind of intimacy among the nobles of the Great Xia Dynasty. Not every old man is qualified to call himself an old man, and not every old man with status will call himself an old man in front of his descendants. It is more commonly used in Students come forward behind.

If he were an ordinary local aristocratic child, he might shed tears of gratitude at this moment.

However, Cheng Jinzhou only used a forced smile to disguise it, and kept saying, "I don't dare to take it, I don't dare to take it."

Xiang Xin wrinkled his nose, took out a thick stack of drafts from his arms, spread them flat on the table, and said seriously: "It's about drawing. I heard Mr. Wu said that you once said that 17-sided polygons cannot be used." Can you make rulers and compasses?"

"Have you learned all this?" Cheng Jinzhou was quite surprised. Drawing a 17-sided polygon doesn't really make sense in itself, it's just more difficult than inventing a paper-cutting method. But if you understand the basis of Euclidean geometry, you will find that this is very important - it is also the most basic geometry, and its advanced point over Pythagorean mathematics lies in its axiomatic structure. If you admit its problems If the assumption is correct and the derivation process is correct, then the answer must be correct.

This kind of thinking has continued to influence the world for more than 2,000 years.

Because of this, Euclidean-based geometry has very high requirements for premises or propositions. For early mathematicians, their propositions were either directly deduced from the five axioms of "Elements of Geometry", or they based the problem on On realistic geometry.

The so-called realistic geometric figures are geometric figures that can be drawn with rulers and compasses. The universality of ruler and compass drawing is the main reason why mathematicians recognize it.

Therefore, if people can use a ruler and compass to draw a 17-sided polygon, then they have one more condition on all related problems. If not, many problems will have to wait for the invention of other mathematical methods.

Of course, just like all famous mathematical problems, the lingering process of studying the regular heptagon will always bring countless new discoveries to mathematicians, and their value may even be higher than the problem itself.

In Cheng Jinzhou's view, when Xiang Xin thinks about the 17-sided problem, it means that she has reached the first-class level in the world. Especially through the rigor of Euclidean geometry, she took a complete shortcut.

Cheng Jinzhou thought deeply for a moment, then looked at Xiang Xin, and suddenly felt that he was a dying master in a novel, and the bald beauty in front of him was the protagonist, waiting for him to use the initiation method to teach...

"Mr. Cheng?" Xiang Xin called in a low voice.

"Oh, haha." Cheng Jinzhou seemed to have come to his senses and smiled sheepishly: "I just said that no one present could draw a 17-sided polygon."

In fact, he said that no one could draw it, and now he was blown away by the wind.

Liu Kuang pondered and said: "I have been thinking about it for several days, but I still have no clue. I asked several friends and asked them to help with inquiries at the Star Warlock Association, but there was no result. Can you draw it?"

It was so troublesome to hear what he said about the process, which made Cheng Jinzhou extremely confused, and he couldn't tell the truth. He shook his head quickly and said, "I can't draw it either."

There are only 10 main steps in drawing a 17-sided ruler and compass. Follow the process and any third-grade child who can use a ruler and compass can complete it. But why are these 10 steps the real value? Gauss used a book to explain the situation, so how could he remember it all in his mind.

Xiang Xin said with a disappointed look: "Then do you think it is possible to draw a 17-sided polygon?"

This is actually the standard problem of the regular heptadagon. If it can be drawn, it means that the regular heptagonal ruler and compass drawing exists. If it cannot be drawn, it does not exist. How to draw it is not the focus of attention.

Cheng Jinzhou pondered for a moment, resisting the desire to peek at Liu Kuang, and said carefully: "It should be possible to draw."

"This is a big problem." Liu Kuang immediately narrowed his eyes, put the tea cup on the corner of the table and said: "Can you write an article on this and report it to the association as a result? Many people will definitely be concerned. "

A lot of people's concern means a lot of association contribution points, which is the most important trading unit for Star Warlocks.

Cheng Jinzhou's eyelids twitched, he was quite excited, but he said: "I'm afraid this will take a long time to study. I only read books by myself, and I haven't studied systematically yet."

He spoke softly and truthfully. The method of drawing regular 17-sided polygons is something that appeared later than analytic geometry. Even if you beat him to death, you won't reveal it, and he really can't describe the process. Except for gentlemen who study the history of mathematics and professionals who are extremely knowledgeable in related fields, who in the 21st century would have nothing to do to study such ancient things? If you change to a standard mathematics professor, the result will be the same.

"Star warlocks are all geniuses, and geniuses should have their own path." Liu Kuang said with a trace of regret: "You must also hurry up. If you have any questions, you can come to me. You have a chance to become a one-star warlock."

Cheng Jinzhou immediately expressed his gratitude. The one-star warlock can be said to be a symbol of status. The difficulty and rarity are comparable to those of academicians in previous lives, but the status is still much higher. As for the two-star and three-star warlocks, it shows that there are high and low levels of academicians.

Liu Kuang may not be a pure mathematician, nor is he the top figure in the ivory tower that Cheng Jinzhou imagined, but compared with those outright political animals, he has become pure and kind.

People are always like this, changing.

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(The previous chapters have been revised and merged)

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