At this time, Ying Zheng's order to seek talents was also responded to. Talents who wanted to get ahead came to Xianyang of the Qin Dynasty from the Six Kingdoms of Shandong one after another.
Under Tie Ying's arrangement, they all lived in the official post in Xianyang City. This time, Zhang Cang was transferred back for Ying Gao's discussion with Ying Zheng.
Because Zhang Cang is a mathematical genius!
In history, Zhang Cang once revised "Nine Chapters of Arithmetic" and formulated a calendar.
Such a talent must be allowed to shine in his own position. In the future, Great Qin will not lack the talents of prime ministers, but it will lack mathematical geniuses.
Therefore, he reluctantly asked Ying Zheng to transfer Zhang Cang back.
…
"Young Master, today is a meeting between scholars who are proficient in the arithmetic of the Nine Chapters and the calculation of scriptures that explains the Gaitian theory and the four-part calendar."
Tie Ying looked at the young man in front of him with burning eyes. He naturally knew how much Ying Gao had paid for this matter and how much he attached importance to it.
That's why he reminds me.
"Prepare the car and go to the Mathematics Palace!"
After a long time, Ying Gao gave an order to Tie Ying and walked out of the study. He had once been a master in Sanchuan County, and now he was going to resume his old career.
But compared to Sanchuan County, Ying Gao felt a little more excited this time because he knew exactly what he was doing this time.
Maybe this is the beginning of an era!
…
"rumble……"
The car rumbled through the quiet streets and finally entered Daqin Central University. Since part of the building had been completed, this meeting was arranged in the School of Mathematics.
Ying Gao is looking forward to this meeting. After all, the people he wants to meet are basically the top geniuses of this era.
He knew clearly that in this era, there were already seven strategies, nine chapters on arithmetic, and a monograph called Sutra Calculation by later generations.
Especially Nine Chapters on Arithmetic, "Nine Chapters on Arithmetic" also has its own unique achievements in mathematics. It is not only the first to mention fractional issues, but also the first to record issues such as surplus and deficiency.
In the "Equations" chapter, negative numbers and their addition and subtraction rules are explained for the first time in the history of world mathematics.
Ying Gao remembers clearly that among the nine chapters of arithmetic, the first chapter "Fang Tian" mainly talks about the calculation method of the area of plane geometric figures.
It includes methods for calculating the area of eight types of figures: rectangle, isosceles triangle, right-angled trapezoid, isosceles trapezoid, circle, sector, arc, and ring.
In addition, the four arithmetic rules of fractions and methods of finding the greatest common divisor of the numerator and denominator are also systematically described.
Chapter 2 "Corn": the proportional conversion of grains; the proportional algorithm is proposed, which is called Jinyoushu; the decline chapter proposes the proportional distribution rule, which is called decline division technique;
Chapter 3 "Decline": the problem of proportional distribution. Chapter 4 "Shao Guang": given the area and volume, find the length of one side and the length of the diameter, etc.; introduces the methods of square root and cube root.
Chapter 5 "Shang Gong": earth and rock engineering, volume calculation; in addition to various three-dimensional volume formulas, there are also engineering allocation methods;
Chapter 6 "Equal Loss": Reasonable apportionment of taxes; use the declining division technique to solve the problem of reasonable burden of taxes and servitude. Today's techniques, declining division technique and its application methods constitute today's direct, inverse proportion, proportional distribution, compound proportion, and chain
The whole theory of proportion including proportion.
Chapter 7 "Insufficient Surplus": That is, the problem of dual approach; it proposes three types of profit and loss problems: insufficient surplus, sufficient surplus and insufficient surplus, two surpluses and two shortages, as well as several problems that can be transformed into insufficient surplus problems through two assumptions
Solutions to general problems.
Chapter 8 "Equations": Problems with linear equations; using the method of separation coefficients to represent linear equations, which is equivalent to the current matrix.
The direct division method used when solving a system of linear equations is consistent with the elementary transformation of a matrix. This is the earliest complete solution to a system of linear equations in the world.
This chapter also introduces and uses negative numbers, and proposes the technique of plus and minus - the addition and subtraction rules of positive and negative numbers, which are exactly the same as the rules of numbers in later generations; the multiplication and division of positive and negative numbers are actually implemented when solving linear equations.
.
This is a major achievement in the history of world mathematics. It breaks through the scope of positive numbers and expands the number system for the first time.
Chapter 9 "Pythagorean": Various problems solved using the Pythagorean theorem. A general solution formula for the Pythagorean problem is proposed: If a, b, and c are the Pythagorean, strand, and chord respectively, then, m>
n.
…
In later generations, Ying Gao once studied Jiuzhang arithmetic. At that time, he was shocked by the wisdom of the ancients. After coming to this era, he sent people to search for it.
Naturally, he had an extremely good understanding of Jiuzhang's arithmetic, and it was based on this that he felt that there was a certain foundation for establishing a mathematics school.
Among the eight colleges, the one with the least foundation is actually the School of Chemistry. The School of Physics is filled with Mohist scientific concepts, and only the School of Chemistry is basically poor.
But in this era, there is never a shortage of smart people. Sometimes it is just due to temporary limitations. With Ying Gao's guidance, rapid development is bound to happen.
With thoughts flashing in his mind, Ying Gao has great expectations for the future of Daqin Central University. He believes that the fruits planted today will definitely make the future of Daqin Empire even better.
…
"Sir, we are here!"
After getting off the chariot, Ying Gao said to Tie Ying, "The chariot is parked here. Follow me in!"
"promise."
Although this request for wise men and women was for the sake of capable people in the world, Ying Gao knew in his heart that there must be spies from the Six Kingdoms among them.
Even with the double screening of Baize and Heibingtai, there are still some fish that slip through the net, so it is necessary to pay attention to safety.
…
Walking into the school, there were more than twenty people sitting inside, people of all ages. Ying Gao chuckled lightly and stood on the podium: "Everyone, I would like to introduce myself here, Ying Gao, the third son of Great Qin.
"
"He is also the initiator and builder of Daqin Central University, and here you are, the School of Mathematics. The arithmetic you are proficient in, Jiuzhang Arithmetic is one of them."
"To enter Daqin Central University, you need to take a unified assessment, and then determine the salary you will receive while teaching at Daqin Central University!"
"In Da Qin, those who are capable work harder, and those who are equally capable will receive more..."
…
For these people, Ying Gao regarded them as treasures. He knew how difficult it was to cultivate a person who was proficient in Jiu Zhang arithmetic.
And he didn't have that much time to cultivate. After all, the war between Qin and Han had only lasted for more than two years.
Although he is a priest of the Central University of the Qin Dynasty, in the Qin Dynasty, a country is built by force, and military merit is the foundation for Ying Gao to establish a foothold in the Qin Dynasty.