Win the Ding 1617

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Just when Xu Hongzu was about to buy a boat and go west to tour the mountains and rivers of the Li River, Mr. Basten and his friends arrived in Hue, and soon got an invitation from Li Shouhan to invite these guests from Europe to the mansion for a banquet.

"Are we really going to meet that Eastern monarch?"

While arranging his embroidered silk robe, Descartes was still a little hesitant, or rather put on airs.

"According to Mr. Basten, he was not only a great and powerful monarch, but also a learned scientist, inventor, and designer. Many of the things we saw were created by him alone."

Frank is very relaxed. Just after he arrived in the mysterious East, a local monarch invited him to a dinner party in his palace. This matter is also a big capital when he returns to Europe and brags with others.

"and you?"

Mr. Descartes turned his attention to Mr. Galileo. Our old gentleman is no longer the one who just escaped from the hunt. His hair and beard have been carefully groomed, and he even sprayed some perfume. The old gentleman looks more like a man in the city of Pisa. Those businessmen and playboys who have no integrity and morals.

The people of Pisa in Italy have always been known for their cunning and dishonesty in business. As Galileo, who has lived in Pisa for many years, he is naturally infected with the flashy atmosphere of the city.

"This, of course I have to go, after all, he is the ruler here, and he will soon be my protector."

A group of people under the leadership of Mr. Van Basten.Following the two deacons of the Lisi of the General's Mansion to the General's Mansion.

Looking at the scenery in the street market along the way, especially after entering the general's mansion, Descartes couldn't help feeling, "It seems that these oriental monarchs, whether they are Arab chiefs, Turkish governors, or suduan, sultans, The monarchs of the Ming Dynasty. They are all the same. Pursuing a luxurious life."

"Don't the princes, dukes, and earls in Europe pursue such a life?" Van Basten retorted.

"Of course the nobles in Europe also want this kind of life, but their gold coins have all become these things."

Frank the mathematician and publisher.Very narrowly, he touched Mr. Basten with his arm.He motioned him to see the soldiers on patrol in the mansion.

The eight-petal caps on the soldiers' heads, the iron pointed helmets, the breastplates on their bodies, and the razor-sharp swords at their waists.The firecrackers on the back make people feel familiar.They have seen these things in France and Holland.

"Think about it, their gold coins are now resting safely in your treasury."

"No, all my gold coins have been turned into goods, in his warehouse." Mr. Basten half smiled wryly, half showed off and complained to his three companions.

After bypassing the corridor and passing through a moon gate, there is another clump of bamboos in front of us.Xiuzhu acts as a screen for the Moon Gate. People walk by the bamboo forest. The breeze blowing from the small bamboo forest makes people temporarily forget the scorching heat of summer.

By the side of a clear water pond, two deacons stopped in their tracks, "My lord will wait for you in the pond pavilion in front, you just go there by yourself."

Holding a fishing rod in his hand, Shou Han was studying Jiang Taigong's spirit in the pavilion by the pond. However, he thought he didn't have the skills of Taigong, so he still fished with a fishing rod with a hook and bait.

However, even with these, he might not be able to catch fish today.

There is a small tail beside him, shaking him constantly, making the fishing rod in his hand move around, which stupid fish will come to eat the bait?

"Daddy! Daddy!" It turned out to be Erya, who couldn't stop shaking Shouhan's right arm, "Tell me quickly, how should I do this arithmetic problem? Tomorrow, sir, I will collect my homework!"

Er Ya has already gone to school. As the eldest daughter of Shou Han, he deliberately did not let his precious daughter go to school at home, but sent her to a school in Hue City. It is a process for a child to complete socialization. Let her know what the outside world is like in school, and it is good to make a few friends.” This is when Shouhan fulfilled Yan Meier’s wish to have another child. Talking to Yanmei'er and Erya's mother while sweating profusely.What socialization is, Yan Mei'er doesn't know, but she knows what it's like outside, and she understands how to make friends.

Thus, Er Ya's homework fell to Shou Han.

Putting down the fishing rod in his hand, Shouhan picked up Erya's homework with a wry smile.Fortunately, just a few simple arithmetic problems.However, it was obvious that Erya was a complete mess.

"Argh, let me ask you, how do you recite the multiplication table?"

Erya pursed her lips, "I'm good at memorizing! I'm the one who memorizes the whole class! If you don't believe me, Dad, I'll recite it for you. One by one gets one, one two gets two...nine nine 81!"

"Then look at this topic, how did it become 37?"

While talking, Shou Han took the pencil from his daughter, and casually drew a vertical formula on the draft paper, "Argh, look, if you are afraid of making mistakes in your calculations, you can calculate the vertical formula. In this case, the multiplier The sum and the multiplicand are clear at a glance, as long as there is no mistake in your basic formula and addition, basically there will be no mistakes."

The conversation between the father and daughter in the pavilion was translated in a low voice by the interpreter beside Basten to the four people who came to the banquet. Mr. Basten knew the specialty of this noble man, and he did not express it The objection was that the three of them couldn't help but be a little surprised after hearing the translation by the interpreter.

"Vertical calculation?"

For these three giants who were almost at the forefront of mathematics in the seventeenth century, vertical calculation is naturally nothing new, and it is not enough to surprise them.However, what surprised them was that a little girl who seemed to be only seven or eight years old, under the guidance of her father, was able to skillfully use the vertical formula to calculate and get the answer.

"It amazes me that an Eastern ruler can skillfully use mathematical calculations to tell his daughter knowledge."

Galileo rubbed his dizzy old eyes and sighed.

"Mr van Basten, I am now beginning to believe the relationship between logarithms and exponents proposed by the ruler you have relayed to me."

Descartes also whispered quietly in Mr. Van Basten's ear.

What happened next made Li Shouhan feel like he was getting a big ax in front of Lu Ban's door, and the ax was stolen from Lu Ban. This feeling is very cool!

First, he sent a pair of glasses to Galileo, so that his old, dizzy eyes could see the world clearly again, of course.Glasses that have not been accurately refracted can only be said to be stronger than the eyes.

next thing.Just to make Galileo's glasses almost shatter!

"Mr. Galileo, I have heard my friend Mr. Basten talk about your theory. Frankly speaking, I think your theory denies a fallacy. But it is also a fallacy."

"Your theory is that the sun is the center of the universe. This breaks the fallacy of the geocentric theory. It has found a basis that can provide reasonable explanations for many natural phenomena, but I have to tell you. According to my research and discoveries, the heliocentric theory is also true. Big mistake, the sun is not the center of the universe, in fact, the universe has no center!"

In a word, the few people headed by Galileo were all very surprised!

The heliocentric theory is the most monstrous theory of this era, and this ignorant monarch actually said that the heliocentric theory also has shortcomings, and the universe has no center?

In order to prove his point, Shouhan whispered a few words in Erya's ear, and Erya left immediately, "I asked my daughter to bring you the lenses I made. My own habit is assembled into a telescope, and I can observe it by myself at night. See if I can find the center of the universe."

When Erya led two servants with a telescope and several parts that can be assembled into the telescope: mirror, lens, lens barrel, etc. to the waterside pavilion, he found that Descartes' glasses were also broken. .

"I have been thinking about a question repeatedly: geometric figures are intuitive, but algebraic equations are relatively abstract. Can geometric figures and algebraic equations be combined, that is to say, can geometric figures be used to represent equations? To achieve this The purpose, the key is how to hook up the points that make up the geometry and each group of "numbers" that satisfy the equation. Because my fleet has been doing ocean trade back and forth, if there is such a method, then, for the chart The description and calculation of the voyage, the distance of the journey, and the arrangement of the sailing schedule will all be greatly affected. For this reason, I have been thinking about what method can be used to combine the "point" of the ship with the "point" of the route. Number "connected."

Descartes didn't care about the exquisite snacks on the table, he glanced at Van Basten who was tearing up a piece of steamed ribs with some disgust, and came back to his senses and asked Li Shouhan, "Excuse me, have you found such a method?" ?”

"That day, my architects repaired the house for me and asked me to see it. In a corner of the construction site that had been completed, a spider on the corner of the roof hung down with its spider silk and landed on the corner of the wall. In the position where it intended to spin its web, although it was quickly destroyed by the carpenters of the construction factory, it soon hung down again. Thanks to this spider, if we regard the spider as a point, it You can move up, down, left, and right in the room. Can you determine each position of the spider with a set of numbers? Moreover, it happened to land on the corner of the room. There are two walls connected to the ground. For the three intersecting lines, if the corner of the wall on the ground is used as the starting point, and the three intersecting lines are used as the three number axes, then the position of any point in the space can be used to find three numbers in order on the three number axes. Conversely, any Given a set of three sequential numbers, a point p can be found in space to correspond to it. Similarly, a set of numbers (x, y) can be used to represent a point on the plane, and a point on the plane can also be useful A set of two sequential numbers to represent."

On the one hand, Shou Han also used his right thumb, middle finger, and ring finger to demonstrate. The three fingers represent three directions, so different data point to the same point.

"Father."

Erya showed sufficient upbringing and politeness when outsiders were present. She put the high-power binoculars that her father had given her in front of her father, nodded politely to the guests, and stood beside her father. behind.

"Daughter, I want to discuss knowledge with these gentlemen, you go to your study!"

"In order to know any point on the coordinate axis. The distance from the origin. Suppose, we can characterize the value on the coordinate axis. Then, starting from the origin, go to the direction pointed by the coordinate axis, and describe the value on the coordinate every one unit length Axis. This value is the number of times described, and it is also a positive integer distance from the origin; similarly, we can also describe a negative integer distance from the origin against the direction pointed by the coordinate axis. It is called the value described by the x-axis It is the x-coordinate, also known as the abscissa. The value depicted by the y-axis is called the y-coordinate. It is also called the ordinate. Although, here, these two coordinates are integers, corresponding to specific points on the coordinate axis. According to the ratio .We can extend it to every point of the real number coordinates and its corresponding coordinate axis. These two coordinates are the Cartesian coordinates of the Cartesian coordinate system."

In our time and space.AD 1637.Descartes published his masterpiece "Method".This book, which specializes in the research and discussion of Western academic methods, provides many correct insights and good suggestions for the later development of Western academics.have a great contribution.In the appendix of the Method he added another book, Geometry.The formal announcement of the establishment of the Cartesian coordinate system by the historians appeared in the book "Geometry".Descartes' research on the coordinate system combined algebra and Archimedes' geometry, which was a key inspiration for the later establishment of analytic geometry, calculus, and cartography.

However, unfortunately, here, he met Li Shouhan.

"So, sir, have you found a verifiable basis for your theory?"

Descartes put away his arrogance. He began to believe that, as countless ancestors said, the East is a mysterious place. It is hundreds of years more advanced than Europe. His people are polite and educated, and the streets are clean. , the army is strong, and business dealings are loyal.

These legends in Europe have been gradually verified during Descartes' journey. However, he still has great confidence in his academic research. Thinking about it, in this mysterious East, no one is more powerful than himself. Understand the relationship between algebra and geometry.

However, this confidence was ruthlessly shattered.

"Oh my god!"

Galileo on one side fell on the chair with a pale face, and the kind Mr. Basten hurried forward to support him, "Professor Galileo, are you feeling unwell?"

"Are Bruno and I both wrong? Is it really like what His Highness said, the universe has no center?"

Galileo just used Li Shouhan's own astronomical telescope to take a peek at the vast universe, trying to find a basis to overthrow Li Shouhan's absurd theory.However, looking at the sky with the binoculars "polished" by the guard himself, it seems that there are many more stars appearing in the sky today than in the past.

"The magnification of my telescope is relatively low, and the lens I gave you is much higher than mine. I believe that you will overthrow your theory. In addition, you can live in peace with me, I believe you The so-called referee will not come to my land to trouble you. You can also conduct your research here, and come up with several new optical instruments to support your research and improve your life."

A table of dinner was set up in the water pavilion, and the sumptuousness made the three European guests a little dizzy. They kept asking Mr. Van Basten, what is this dish and what is the other dish.

Mr. Basten, who was full of delicious food, but couldn't let go of eating it because of the disturbance of the three soil turtles, naturally said to them, "Just eat it. Could it be that an oriental monarch will give you some delicious food?" Is there something good?"

The eyes of the three turtles choked on the words, but, thinking about it, the table in front of them looks delicious and delicious. The princes who want to come to Europe have never seen it, so why bother what it is, Just eat it until it tastes good in your mouth!

"Your Highness, I wonder if I can eat such delicacies every day in your territory?"

Although not as famous as Galileo and Descartes, Frank, who is a mathematician and businessman, is keenly aware that they are also extremely valuable to Shou Han, a mysterious oriental ruler. of.

"He is a monarch, how could he have so much time to study academic issues? And we can just use our research in exchange for living expenses here."

This is the result of a secret discussion between Frank and Descartes when they used an excuse to find the place of reincarnation of the five grains.

So Frank began to play a role similar to that of a broker.Start haggling for a good price for yourself and your friends.

"In the general's territory, prices are very low. As long as you have gold coins in your hands, eating whatever food you want is easier than rubbing your hands."

damn it!After hearing Van Basten's words, Descartes and Frank cursed in their hearts almost at the same time.Among the three people, one is a criminal who just escaped from the iron claws of the templar, and has been hiding in the cargo hold for many days. He must not have much money on him, and the other two are not so rich in their pockets. How can this be maintained? life?

"We want to conduct our own research here, and we would be honored if you would be generous enough to support our academic research!"

In the end, Galileo was a little older and had much more experience than Descartes and others. He simply bypassed those links and directly asked to work for Li Shouhan.And also to carry out their own academic research activities! (to be continued..)