Chapter 232 Yang Hui Triangle

Just after the ugly hour in the afternoon, a group of warriors in high armor appeared in front of the Qianhu Gate in the west of Lin'an, the number of this group of people was about twenty, all of them were tigers and bears, mighty and majestic, with a solemn look on their faces, and the war horses under the crotch were all good horses, although they were not as good as the dozen or so high-grade royal horses in the Ouchi, they were extremely rare in Lin'an City.

When approaching the city gate, the group of warriors relaxed the reins one after another, walked slowly, and the first one was burly, only to see him holding the reins of his horse, looking at the word "Qianhu" on the city gate and smiling: "Lin'an has arrived." ”

The person who spoke was the Xiangfan envoy who returned to Lin'an to participate in the military reform conference, the famous general Lu Wende,

"Yes, father, it's been almost another year." A young general next to him said,

"Well, Xin'er, all the brothers of the family, go into the city together."

"Father, are you going home first?"

Lu Wende shook his head and said: "Xin'er, you take everyone home, I will go to the Prime Minister's Mansion to visit the Taishi first, if I don't come back at dinner, you can take everyone out to have a good meal, so that the sons and daughters can enjoy the food of Lin'an." ”

Lu Xin said: "Got it, father." ”

In the imperial study of the Funing Palace,

Wen Tianxiang sat down and said: "Your Majesty, it is said that it is the Double Ninth Festival, and whether this military reform can be carried out smoothly depends to a large extent on the attitude of the envoys of the four major theaters. ”

Lu Xiufu said with a smile: "Brother Song Rui, don't worry, Your Majesty has already made a bamboo in your chest." ”

I nodded and said: "Among the four major war zones, Gundam and Li Tingzhi should support the military reform, and Lu Wende will stand on Jia Yidao's side, only Xia Gui's attitude is unknown for the time being, even if Xia Gui expresses his opposition, the support rate for the military reform will be fifty percent, so I don't think it's a big problem." ”

Wen Tianxiang still had a trace of worry: "If Xia Gui has an opposing opinion, then it will be opened in five or five years, and Jia Rudao's party will strongly oppose it, so the minister is worried that there will be resistance." ”

I know that Wen Tianxiang doesn't know Xia Gui as well as Lu Xiufu, and his surname is stable, and he tries his best to be perfect in his actions, so he smiled and said: "When the time comes, let's see the move, there must be resistance, even if Xia Gui supports military reform, the resistance will still be not small, by the way, Song Rui, what has been the recent progress of Gunpowder Si Yun Bofei." ”

"Back to Your Majesty, after Shen Yiqiu's improved lathe has been put into use, using water power as the drive, its efficiency has been improved a lot compared with hand or foot pedals, the production speed of the musket has also been greatly improved, the throwing bomb can also be mass-produced, the mold of the artillery is basically formed, and the cannon can be tested in recent days, at present, Yun Bofei's main focus is on the development of the musket, but he still has no clue."

For the development of muskets, I worked out the steps from arquebuses, to muskets, to flintlock guns, smoothbore guns, and finally to rear-loading guns, in the order in which firearms were invented.

"Muskets, muskets." I muttered a few words, and suddenly remembered a story I knew about the inventor of the musket,

Among the later generations of firearms researchers, some people believe that it is the German watchmaker Johann, Kiefus invented the musket, born in the early sixteenth century Kiefers is quite famous in the watch world, he can not only make a variety of exquisite watches with unique shapes, but also have a strong interest in various firearms, and personally made a lot of exquisite arquebuses, one day, Kiefus came to the house, the guests smoked and lit the fire, not with the popular matches at that time, but with the ancient flint friction ignition method, Kiefers was instantly inspired by the sparkling spark of flint, who combined the serrated rotating steel wheel of a clock with the flint capable of producing sparks, and with his experience and wisdom, he succeeded in developing the world's first revolver in 1515.

Clockmaster, by the way, aren't I asking Yang Xiaozhi of Lin'an University to study clocks?

Thinking of this, I said: "Song Rui, after the military reform meeting, you ask Yun Bofei to come to Lin'an University, and I will introduce someone to Yun Bofei to see if it can help the development of muskets." ”

"Yes, Your Majesty."

I practiced Shadowless Step and Long Fist in the Martial Arts Hall for a while, and then I took Yuan Jian and Xiao Qi to the Shifeng Trading House.

Although there have been a lot of things these days, I am still anxious to meet Yang Hui, a mathematician.

As soon as I entered the door, I saw Xiao Si come forward with a smile and greeted, "Childe is here, Miss Fang, Mr. Shen, they are all upstairs." ”

"Well, Xiaosi, you've been looking good lately."

"Gongzi Xie, Gongzi Hongfu, Xiaosi feels very happy here."

"A person can feel happy, it is a kind of happiness, haha, go upstairs."

When Fang Ling saw me pushing the door in, he shouted, "Brother, why did you come, we are all hungry." ”

"Why, Ling'er is hungry again."

"What, I've been busy with the Red Cross for the past few days, and I haven't eaten lunch yet."

I know that after Lin Ying left, Fang Ling spent most of his time at the Red Cross, and discussed the establishment of the Red Cross with Xiao Tian and Pu Shougeng: "Ling'er, this is not good, no matter how busy you are, you can't skip three meals a day." ”

Fang Ling's heart was sweet: "Got it, brother." ”

"I've seen Childe." Shen Yiqiu and Quan Jue saluted together,

I nodded, my eyes fell on a middle-aged man behind the two of them, and said, "This is Mr. Yang Hui Yang." ”

"Exactly." Shen Yiqiu introduced, "Mr. Yang, this is the son of Huyan. ”

Yang Hui took two steps forward, looked at me closely for a moment, and said, "Dare to ask Childe, did you write the book "Brief Arithmetic"." ”

"yes."

Yang Hui suddenly took a step back and saluted me solemnly: "Yang has seen Gongzi Huyan, but he didn't expect Gongzi to be so young. ”

"Brief Arithmetic" is a mathematical compendium written by me from memory, and its coverage is far wider than that of this era, if Yang Hui in front of me is the discoverer of Yang Hui's triangle, then he naturally understands the preciousness of this book.

I saw that this Yang Hui looked mediocre, but he was quite arrogant between his eyebrows, and he must also be a person who was proud of his talents: "Mr. Yang Hui, is that "Detailed Explanation of the Nine Chapters of Algorithm" one of your masterpieces?" ”

"Childe, it is Yang's work."

"Okay, sure enough, it's you."

Shen Yiqiu and the others were stunned when they heard this, just like Quan Jiu's reaction last night, thinking that I knew Yang Hui, and I didn't explain it to them, and then said: "Mr. Yang's work will definitely be passed down through the ages." With that, I walked to the table and picked up a hard pen to draw out the Yang Hui triangle, I used Arabic numerals, which are currently popular Hsieh numbers.

Yang Hui looked at it and said: "Childe, this is what Yang learned from Mr. Jia Xian, can Childe name it." ”

"Of course you can, I think this can be called Jia Xian's triangle, or Yang Hui's triangle, whether it is Jia Xian or you Yang Hui, you can be famous for future generations."

"Jia Xian Triangle, Yang Hui Triangle." After Yang Hui finished reading, he said, "Gongzi Xie." ”

"Brother, let's talk while eating, even if I'm not hungry, the guests have to eat."

"Okay, Ling'er is right, inform Xiao Tian to serve the food."

"Brother, Xiao Tian is still in the Red Cross."

"Oh, I forgot, let's call Xiao Si."

Yang Hui drank the first glass of wine and said: "Childe, this Xie number is a major innovation in the mathematics world this year, so the recording method is indeed much more convenient, I didn't expect that there are such people in the palace, and I will definitely pay a visit if I have the opportunity." ”

I smiled: "Mr. Yang, in your book "Detailed Explanation of the Nine Chapters of Algorithms", you have compiled the number table I just drawn, which is called the 'origin of the square method' diagram, and this table also expresses the law of the quadratic coefficients of each term after the polynomial is opened in parentheses. ”

"Exactly, Childe has read Yang's nine-chapter algorithm."

"I've seen a small part of it, so I know a little bit about it."

Shen Yiqiu on the side said: "Childe, the university is ready to recruit Mr. Yang Hui as a professor in the Department of Mathematics, but the mathematical attainments of people in the university are not as good as Mr. Yang Hui, so this title is also for instructions from Childe." ”

"This is simple, Mr. Yang's talent is enough to be a master."

"Master." Shen Yiqiu and Quan Jue blurted out together, and even Yang Hui himself was a little stunned,

Without hesitation, I said, "That's right." ”

You must know that there are very few masters of this level of master, only He Ji and Shen Yiqiu were awarded the title of master in Lin'an University, and Yun Bofei of the Gunpowder Division, and the rest such as Song Wuxin, Huang Daopo and others are only masters, although there is only a word difference between the master and the master, they are completely different realms.

Shen Yiqiu saw that I was so resolute and said, "Yes, childe." ”

Fang Ling took a sip of tea and also came to join in the fun: "Brother, look at Ling'er, what level of my martial arts is." ”

"This has to be evaluated by Mr. Yuan."

Yuan Jian said: "It can be described as a master. ”

Fang Ling smiled: "Haha, I am also a master. ”

I said: "Mathematics is a science that studies numbers and shapes, and is the foundation of any science, physics, chemistry and other natural sciences are inseparable from mathematics. ”

Yang Hui had already put away his arrogance: "Please make it clear to the child." ”

"Mathematics covers a wide range, this discipline will be collectively referred to as mathematics in the future, which is roughly divided into algebra, functions, trigonometry, geometry, derivatives, integrals, differentiation, etc., sir, you focus on the technical aspects of computing, you have read my "Brief Arithmetic", the above content is the field of mathematics should be involved, of course, I am not saying that you are proficient in everything, that is impossible, I mean I hope that Mr. Yang you can become the leader of my mathematics subjects."

"Yang understands, but he still asks his son for more guidance."

I understand what Yang Hui means, but I only know the surface of this: "Mr. Yang, I have not conducted special research on mathematics, and the arithmetic briefs I wrote, including the physics briefings and chemistry briefings I wrote, are only conceptual contents, and it depends on you elites in each subject to carry them forward." ”

Yang Hui looked at Shen Yiqiu in surprise and asked, "What, physics and chemistry are also written by Huyan Gongzi." ”

"Exactly." Shen Yiqiu said with a smile, "Childe, if it weren't for these brief books, Mr. Yang Hui wouldn't be willing to come to see you." ”

Yang Hui's face turned red and said, "Yang's frog at the bottom of the well, son, forgive me." ”

Seeing that he was embarrassed, I hurriedly smiled and interrupted: "Mr. Yang, what suggestions do you have for Lin'an University?" ”

"Childe, it is really a great initiative for Lin'an University to open up the atmosphere of new learning, but Yang feels that the person who opened the university seems to be too stingy."

When Shen Yiqiu and the others heard this, they suddenly felt uncomfortable,

"Well, what do you mean?" I asked curiously, and at the same time motioned to Shen Yiqiu and the others to stay calm,

Yang Hui didn't seem to notice that Shen Yiqiu and the others had different faces, and said: "Childe, you think, I am against tens of millions of people, and there are only twenty students in this mathematics department, this is not stingy. ”

I laughed and said, "Haha, Mr. Yang, this is not stingy, it is really difficult to find a professor in the school, Mr. Yang is here, there must be a solution." ”

"Childe, Yang has nothing to say about other subjects, but in the Department of Mathematics, Yang can pack a ticket, and there is no problem in inviting three or five capable mathematics professors."

I was about to continue, but I saw Xiao Si hurriedly go upstairs to report: "Childe, there is a group of unknown people who are making trouble in Tongle Building. ”