One day, Chen Jingrun touched his head during lunch. Oh, his hair is too long. He should get a haircut quickly, or people will think he is a girl when they see him. So he left work and ran to the barber shop.
There are so many people in the barber shop that everyone cuts their hair next to each other. Chen Jingrun's brand is the small brand number 38. He thought it was too early for me to turn now. Time is so precious that I can't waste it. He hurried out of the barber shop, found a quiet place to sit down, then took out a small notebook from his pocket and recited new words in a foreign language. He recited it for a while and suddenly remembered that when he was reading a foreign language in the morning, there was one place he didn't understand. You must understand what you don't understand. This is Chen Jingrun's temper. He looked at his watch. It's only half past twelve. He thought: check in the library first, and then come back for a haircut. He stood up and left. Who knows, not long after he left, it was his turn to get a haircut. The barber's uncle shouted, "Number 38! Who is number thirty-eight? Come and get a haircut! " Think about it. Chen Jingrun is reading in the library. Can he hear the barber's uncle calling number 38?
After a long time, Chen Jingrun found something he didn't understand in the library, and then went to the barber shop happily. But he passed by the foreign language reading room, and there were all kinds of new books, which were really nice. He ran in and read another book. It was not until the sun went down that he remembered to cut his hair. As soon as he touched his pocket, the little sign No.38 was still lying well. But what's the use of his coming to the barber shop? This number is outdated.
At the age of 2.7, Xiao Gao went to primary school. The teacher's name is Butner, and he is a famous local mathematician. This young teacher from the city always thinks that children in the countryside are idiots and their talents can't be displayed. In a math class in grade three, Butner lost his temper with the children again, and then wrote a long list of formulas on the blackboard: 81297+81495+81693+…+100701+69.
"wow! How many figures are there in total? How to calculate? " The more nervous the students are, the more they can't figure out how to calculate. Butner is very proud. He knew that the last number was 100, which was larger than the previous number 198. Even if these naughty students do their calculations obediently all morning, they won't work out the results. Unexpectedly, in a short time, Gao Xiaosi came over with a small slate with the answer written on it and said, "Teacher, I have finished the calculation." Without looking up, Butner said angrily, "Go, don't be ridiculous. Anyone who wants to scribble numbers must be careful! " Say that finish, waved a hammer fist. But little gauss insisted on not leaving and said, "teacher, I'm not kidding." And gently put the small slate on the platform. Butner took one look and was too surprised to speak. Unexpectedly, this 10-year-old child worked out the correct answer so quickly. It turned out that little Gauss did not add one by one like other children, but observed carefully, used his head and found the law. He found that the sum of two numbers at the beginning and the end of a figure is the sum of 182 196,50, and182196 can be quickly calculated by multiplication. Little Gauss's incredible mathematical talent made Butner admire and feel guilty. From then on, he never looked down on children from poor families. He bought many math books for little Gauss and asked his young assistant Battier to help little Gauss learn math.
3. Mathematician Chen Jingrun thought while walking, and bumped into a tree trunk and said, "I'm sorry, I'm sorry." Keep thinking.
4. Short stories by mathematician Rudolph
/kloc-Rudolph, a German mathematician in the 6th century, spent his whole life calculating pi to 35 decimal places, which was later called Rudolph number. After his death, someone else carved this number on his tombstone.
5. The short stories of mathematician Jacob Bernoulli.
Jacques Bernoulli, a Swiss mathematician, studied the spiral (known as the thread of life) before his death. After his death, a logarithmic spiral was carved on the tombstone, and the inscription also read: "Although I have changed, I am the same as before." This is a pun, which not only describes the essence of spiral, but also symbolizes his love for mathematics.
6. Liu Hui (born around 250 AD) is a very great mathematician in the history of Chinese mathematics and also occupies a prominent position in the history of world mathematics. His representative works "Nine Arithmetic Notes" and "Calculation on the Island" are the most precious mathematical heritages of China.
Nine Chapters of Arithmetic was written in the early Eastern Han Dynasty. * * * There are solutions to 246 problems. In solving simultaneous equations, calculating four fractions, calculating positive and negative numbers, calculating the volume and area of geometric figures and many other aspects, it is among the advanced in the world. However, due to the primitive solution and the lack of necessary proof, Liu Hui made supplementary proof for it. These proofs show his creative contributions in many aspects. The solution of linear equations is improved. In geometry, the secant method is put forward, that is, the method of finding the area and perimeter of a circle by using inscribed or circumscribed regular polygons. He scientifically obtained the result that pi = 3. 14 by using secant technology. Liu Hui put forward in the secant technique that "if you cut it carefully, the loss is not great, and then you can't cut it."
In the book Island Calculation, Liu Hui carefully selected nine surveying problems, which were creative, complex and representative and attracted the attention of the West at that time.
Liu Hui has quick thinking and flexible methods, and advocates both reasoning and intuition. He is the first person who China explicitly advocated to demonstrate mathematical propositions by logical reasoning.
Liu Hui's life is a life of hard exploration of mathematics. Although he is in a low position, he has a noble personality. He is not a mediocre man who seeks fame and fame, but a great man who never tires of learning. He left a precious wealth to our Chinese nation.