What are the childhood stories of Hua?

Hua (1910-1985), a native of Jintan District, Changzhou City, Jiangsu Province, is a contemporary self-taught master of science and a famous mathematician at home and abroad.

Hua devoted his whole life to the research and development of mathematics, and made contributions to the development of mathematics in China. Known as "the father of modern mathematics in China", "the god of mathematics in China" and "the people's mathematician".

Hua is mainly engaged in the research of analytic number theory, matrix geometry, canonical group, automorphic function theory, multiple complex variable function theory, partial differential equation, high-dimensional numerical integration and other fields; It also solves the difficult problem of estimating the complete triangular sum of Gaussian, the improvement of Willing and Tali problems, the proof of the basic theorem of one-dimensional projective geometry, and the application research of modern number theory methods.

He is listed as one of 88 great mathematicians by the Chicago Museum of Science and Technology. The international achievements in mathematical research include Fahrenheit theorem, Fahrenheit inequality and Hua Wang method. Bateman, a famous American mathematical historian, said: "Hua is China's Einstein, enough to be an academician of all the famous academies in the world." .

Hua's childhood story:

1, Hua's father is an old man. He gave birth to Hua at the age of forty, so he was worried that he would not grow up. Because of the sentence "You can take root in a laundry basket, and it's easier to feed", I wanted to call him "Logan" and finally named him Hua. This is the origin of his name. Represents the father's wishes for his healthy growth.

He likes thinking since he was a child. Because he often thinks too seriously, he is laughed at by his peers and called a nerd. But this still can't change Hua's love for learning. He grew up in a poor family because his family had no money to pay the tuition. Hua, who can't go to school, didn't give up. He helped his father manage the grocery store and taught himself math at home. After dropping out of junior high school, it took him only five years to complete the math course from high school to university.

Hua didn't get the diploma because he didn't get very good grades in primary school. He is a very playful boy, but he likes studying math.

One day, his math teacher set an ancient math problem to test his classmates. That topic is like this: there are two remaining three places; Five places or three; Seven, the number of seven is still two. How much is this thing? As soon as the topic came out, the whole class exploded and had a heated discussion, but no one gave a definite answer. The teacher was about to say the answer when Hua raised his hand and replied, I see, and the answer is 23. Not only did he tell the answer, but his algorithm was also very different, and the teacher was shocked.

On another occasion, his math teacher worked out a math problem to find the area. Hua didn't use the math teacher's method, but came up with a simpler algorithm, which caused the teacher's dissatisfaction. When the teacher handed out the exercise book, he deliberately put Hua's exercise book at the end and asked how Hua got the correct answer. So Hua explained his solution to the problem, and things were really much simpler.

Edited on 2020- 1 1-04.

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A mathematician's short story, a short story.

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Say a heavyweight, his name is von Neumann, who once participated in the manufacture of atomic bombs, built the framework of modern computers and made the first reliable modern numerical weather forecast. He is also one of the most outstanding mathematicians in the 20th century. He has an excellent memory and can quote word for word from Encyclopedia Britannica or A Tale of Two Cities 15 years ago. At the same time, his mental arithmetic ability is also very strong. Let's learn more about him through several stories. The computing power exceeds that of a calculator. Because von Neumann has a strong memory and can remember many mathematical formulas and constants, he can calculate mathematical problems faster than the average person. In order to see how fast Neumann can calculate, a research institute gave him a question and asked a staff member to use a calculator to calculate for half a day. Then von Neumann began to do mental arithmetic. Halfway through the calculation, the clerk prompted von Neumann to continue the calculation, and then suddenly said in surprise, you are right! Later, people told von Neumann that the clerk actually calculated all night, but von Neumann only spent about 5 minutes. This is the most famous story of von Neumann. There is a problem. The distance between the two places is 32 kilometers, and there are people riding bicycles at both ends. Their speed is 16 kilometers per hour. There is a fly in the middle, flying over the front wheel of one of the bicycles at a speed of 24 kilometers per hour. When it meets each other's wheels, it turns around and returns, and then moves back and forth until two bicycles collide and crush the fly. There are two ways to calculate this problem. The first one is more complicated, that is, adding up the distance of flies flying back and forth. Because two people are getting closer and closer, it becomes a problem of calculating infinite series, which many people will do. The second one is very simple, just multiply the flight speed of the fly by the flight time. How to calculate the flight time? Because they only need to ride 16 km to hit it, it takes only one hour to crush flies, and flies can only fly 1 hour, so the flight speed is 24 km/h multiplied by 1 hour, and the answer is 24 km. After listening to this, von Neumann thought for a moment and reported the answer to 24 kilometers. Disappointed, the questioner said, have you heard this method before? Von Neumann is very strange. What's the coup? Isn't it an infinite series? It's interesting to remember numbers instead of names. Von Neumann has a strong mental arithmetic and memory, but he can't remember names and faces. But von Neumann is very kind. Even if he forgets the names and looks of his family, he will accompany them around the room and chat with each other about interesting things. However, such an interesting and important contributor to the world died young and died in the United States on 1957 at the age of 54. When we use computers and watch the weather forecast now, we must remember that the contributions of these mathematicians and scientists are behind them, and they make the world a better place.

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1 and 8 years old, Gauss discovered mathematical theorems. The famous German scientist Gauss (1777 ~ 1855) was born in a poor family. Gauss learned to calculate by himself before he could speak. When he was three years old, he watched his father calculate his salary one night and corrected his father's calculation mistakes. One day, Gauss's math teacher was very depressed. Say to the students, "You calculated the sum of 1 plus 2 plus 3 to 100 for me today. Whoever can't figure it out will be punished for not going home for lunch. " As a result, in less than half an hour, Xiao Gao Si picked up the slate and stepped forward. "Teacher, is this the answer?" Without looking up, the teacher waved his thick hand and said, "Go, go back!"! Wrong. " Gauss stood still and put the slate in front of the teacher: "Teacher! I think this answer is correct. " The math teacher wanted to shout, but he was surprised when he saw the number written on the slate: 5050. How did this 8-year-old get the answer so quickly? Gauss explained a method he discovered, which was used by the ancient Greeks and China people to calculate the sequence1+2+3+…+n. Gauss's discovery made the teacher feel ashamed, and felt that his previous view of being arrogant and belittling poor children was wrong. He also taught seriously in the future, and often bought some math books from the city for his own study and lent them to Gauss. With his encouragement, Gauss later did some important research in mathematics. 2, Chen Jingrun haircut Chen Jingrun is a famous mathematician in China. He doesn't like going to the park and walking, but studying. When he studies, he often forgets to eat and sleep. One day, when Chen Jingrun was having lunch, he touched his head and found that his hair was too long. He should get a haircut quickly, otherwise people will think he is a big 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 got brand number 38. He thought, it's still early for me to turn around. 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 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 calling number 38? 3. Hua: Once, while looking at the shop, Hua was solving a math problem. A lady came and wanted to buy cotton. When she asked Hua how much it was, he was completely absorbed in the problem and didn't hear what the other party said. After calculating the answer, he casually said a number. The lady thought he was talking about the price of cotton and screamed, "Why is it so expensive?" . At this time, Hua knew that someone had come to buy cotton. When Hua sold cotton to a lady, he found that the toilet paper he used to calculate the problem was taken away by the lady. This made Hua desperate to catch up with the young lady, and he finally caught up with her. Hua said shyly, "Auntie, please … please give me back the toilet paper." The woman said angrily, "This is the money I paid, not you." Hua was in a hurry and said, "How about this! I paid for it. " When Hua reached for the money, the woman seemed to be moved by the child! He not only asked for money, but also returned the toilet paper to Hua. At this time, HuaCai slightly relieved. After returning home, I began to calculate math problems again ... 4. Archimedes, the king of Syracuse, and the goldsmith of Luo Rang made a crown out of pure gold. Because he suspected that there was silver in it, he asked Archimedes to identify it. When he entered the bathtub to take a bath, the water overflowed outside the bathtub, so he realized that although the weight of objects made of different materials was the same, the discharged water would be different because of their different volumes. According to this truth, it can be judged whether the crown is adulterated. 5. Zu Chongzhi (AD 429-500) was born in Laiyuan County, Hebei Province. His outstanding achievement in mathematics is the calculation of pi. Before the Qin and Han Dynasties, people took "the diameter of three weeks a week" as pi, that is, "the ancient rate". 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