Luo Zhaoyun walked to the desk, picked up a small brush, dipped it in the undried ink stored in the porcelain bottle, and wrote a few Arabic numerals on a piece of rice paper. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

"Miss Zhiqing, please look!"

"Hey, what kind of symbol is this?" Xue Zhiqing glanced at it, a little dazed.

Luo Zhaoyun carefully explained: "These I call the symbol body, representing numbers, such as our daily mathematical characters such as one, two, three and other Chinese characters, the number is more, it is very long to write, and it does not look intuitive enough, if you use 1, 2, 3 to replace, so that the calculation is very simple, there is no need to have confusion and redundancy in the cumulative operation." ”

"These, is it really possible?"

Xue Zhiqing also studied arithmetic, because when ancient China was transmitted to the Sui Dynasty, there were already "Zhou Ji" of the pre-Qin Dynasty and "Nine Chapters of Arithmetic" of the Western Han Dynasty.

The former is the oldest work on astronomy and mathematics in China, mainly expounding the theory of heaven and the quadrangular calendar at that time.

The latter is the mathematical algorithm, the ancients put forward a number of arithmetic problems, and created a new mathematical method to understand the Pythagorean shape, weight difference, etc., the content is very rich, the whole book adopts the form of a set of problems, involving the square field, corn, business skills, average loss, surplus and shortage, equations and Pythagorean and other different fields of calculation problems.

Ma Xu, Zhang Heng, Liu Hong, Zheng Xuan, Xu Yue, Wang Cang, etc. of the Eastern Han Dynasty were familiar with the "Nine Chapters of Arithmetic", or made annotations for it, and the popular editions of the Sui Dynasty were mostly annotations made by Liu Hui for the "Nine Chapters", and this person also wrote the book "Island Arithmetic".

While Xue Zhiqing is proficient in literature, she also has a dabbling in arithmetic, and thinks that she has learned very deeply, but rarely uses it, because in the Great Sui era, except for master craftsmen such as Yu Wenkai, who often need to use arithmetic when building, she writes articles and writes books, but often does not use it.

The most important thing is that even those who are proficient in arithmetic are not respected in this era, and they feel that it is learned by prostitute craftsmen, which is a superficial and vulgar thing, and no one attaches importance to it.

"Of course, if we use it, we have incredible progress in industry, economy, construction, shipbuilding, natural sciences and other aspects."

Xue Zhiqing heard Guogong's description, curiosity became aroused, and he stared at them carefully, if simple symbols were used to replace complicated mathematical words, it would not be a shortcut.

At this time, she had an idea, her face was full of surprise, and her mind was constantly thinking about the flashes in this aspect, which seemed to have been opened, and she faintly felt that this kind of symbol instead of text writing may really have important significance for mathematical calculations and deductions.

"Zhaoyun, can you explain their definition and usage for concubines?"

Luo Zhaoyun nodded, he knew that Xue Dacai's knowledge runs through ancient and modern, and she is proficient in a variety of fields, seeing that she is also very interested in these arithmetic theories, in fact, it is not surprising, he took a pen and wrote down ten Arabic numerals "0, 1 to 9" on paper, and explained to her: "This is a mathematical symbol, representing one, two, three to nine, pick one is represented by 11, and so on, convenient and concise ......"

Xue Zhiqing's eyes lit up, nodded slightly, and stared intently.

In an instant, Luo Zhaoyun wrote down the number writing of single digits, tens, and hundreds, and explained it, this kind of thing is easy to understand, and with Xue Zhiqing's IQ and knowledge reserves, he understood it almost instantly.

"Addition, for example, can be written like this...... Take this instead of multiplication...... The division calculus is like this...... "Luo Zhaoyun is like a teacher at this time, telling a genius student the most basic mathematical knowledge.

Xue Zhiqing's eyes are getting brighter and brighter, flashing with wisdom, with these numbers instead of traditional characters, it is very simple to calculate, write and add and arrange, and the operation will naturally reduce suffering.

"Ah, that's how it can be!"

"There's something more complicated, do you want to hear it?"

"If you want it, you don't dare to go against it." Xue Zhiqing's smile was like a flower, with a sense of wine, and her cheeks were even more delicate.

Luo Zhaoyun communicated with talented women through contact and found that she was also quite understanding of mathematics, so he made an exception and carefully explained more deeply for her, from simple addition, subtraction, multiplication and division, to complex equations, and then open squares, open squares, sine, anti-chord numbers, and later mentioned cardinality, exponents, derivatives, etc., from primary school to university mathematics knowledge, pick up and tell her about it.

If these things are replaced by ancient words, it is very complicated, not intuitive, and difficult to calculate, which is why modern China is backward in industry, mathematics, physics and chemistry, etc., don't look at Arabic numerals are simple, but numerology is originally symbolic logic, if you use words to write, you will lose the key to this field, especially more complex precision operations and electronic programs, aviation technology and so on.

"It's simply amazing, this kind of symbol has the effect of turning decay into magic!" At this time, Xue Zhiqing finally realized the superiority of this kind of number symbol, which is too convenient, simple and practical, and is the most suitable for operation.

At this moment, Xue Zhiqing, her face was full of surprise, regardless of the talent girl's reserve, she couldn't help but exclaim.

A lot of cumulative calculations, layer by layer, after calculating dozens of times, can be easily obtained with these exponential formulas, with these ten simple numbers, for engineering calculations, astronomical calendars, optics, physics, arithmetic geometry, are an unprecedented advancement.

Some of the problems that once plagued Xue Zhiqing seemed to have a direction to think about all of a sudden, and she could easily solve them by making equations with unknown methods, which was too incredible to her.

Xue Zhiqing stared at him intently, her breathing was a little short, and her face was flushed, much like the ambiguous look that an emotional woman should have.

However, at this time, Xue Zhiqing was not moved because of love, but because of this huge academic leap, she was excited, shocked, and ecstatic.

After her own experience, she can already imagine that if this thing is implemented in schools, maybe within ten years, many students will become proficient in this area, and in the long run, after two generations, Huaxia's arithmetic level will reach a very high level.

"Zhaoyun, you are really amazing, where did you learn these things, you can create these ten numbers, it is no less than the status of the sons of the pre-Qin Dynasty, and you can also be named a saint." Xue Zhiqing asked curiously.

"Mathematical knowledge, I was in my teens, when I lived in the northwest of Zhuo County, I met a hidden old man to teach me, I don't know his name, he once said, this is when he went to the Western Regions to get, let me study carefully, I hope that one day, in the Central Plains, in addition to the traditional poetry and historiography, Confucianism and Han Fu, there are engineering mechanics, etc., scientific creation, so that it can benefit the people, promote the realization of the prosperous era, unfortunately, I have been fighting, and I have not had the opportunity to mention this matter to the imperial court, let alone promote, the coming troubled times, Very few people are focusing on academics, so I hope to teach Zhiqing to the Zhiqing girl, temporarily try to teach in Taixue, and when the world settles down again, the first scholars to contact may be sent to all parts of the world to promote this kind of universal education in mathematics, so that the Han people in the Central Plains can attach importance to mathematics as soon as possible and develop the intelligence of science and education. ”

Xue Zhiqing heard him say so proudly, for some reason, he was also deeply infected, and at this time he felt that his image was no longer the temperament of a military general, a hero, a talented scholar, and had risen to the height of a benevolent person who worries about the country and the people.