The Math Level Of The Shoemaker Is At The Undergraduate Level To See The University Teacher

A shoemaker with only secondary school qualifications has reached the level of undergraduate education, and most of his questions have been answered correctly.

Shoe repair masters are amazing.

It is discovered that this "grassroots mathematician" is an economics postgraduate from surname Pu of Tianjin Normal University.

About a week ago, Miss Pu, who lives in Grand Port, went to a shoe stall near Yucai Road to repair shoes, waiting for the shoes to be taken. Miss Pu chatted with her shoe master.

"I think you are a learned man. I ask, are you a college student?"

During the chat, the shoe master who spoke in front of the Northeast accent suddenly asked such a sentence. Miss Pu was surprised to hear that, but nodded her head.

"Then, can I ask you something? I want to borrow a book."

I thought the shoemaker had to borrow a novel or something. I didn't expect him to be surprised when he opened his mouth. He even borrowed a math book written by Hua Luogeng. It was published in the 50s and 60s of last century.

"I just want to borrow it and study it, even if I buy it."

The shoemaker said sincerely.

At first, Miss Pu thought he had made fun of the shoemaker, and he talked with him about several mathematical theories, but unexpectedly discovered that the shoe repair master was not only able to speak clearly and clearly, but also could tell who had put forward these theories.

Miss Pu noticed that the unskilled shoe repair teacher not only learned the advanced mathematics knowledge such as calculus, limit and so on, but also learned the knowledge of Fei o geometry, space analytic geometry and multiple integral.

In her words, she is now studying for postgraduate courses, which can be taught by shoemaker.

The teacher of the University of science and technology

How high is the shoemaker's math level?

With this problem, the reporter invited the math teacher of Tianjin University of Science and Technology to the shoe master's home in Grand Port.

This is a low flat house with only seven or eight square meters. A bed made of brick and wood occupies more than half of the space. There is a desk in front of the bed, with a stack of draft paper in the corner.

The clothes and quilt in the room were a bit messy, but the book of Lao Shen, a shoe repair master, was quite well preserved.

He wrapped every book in clean leather and wrapped it in plastic bags.

Having heard of Miss Pu's narration in advance, the mathematics teacher of the University of science and technology has produced 7 mathematical questions at a stretch, covering the advanced mathematics knowledge such as limit, derivative, calculus and so on.

Took the "roll", Shen Shen single handedly chin chin, thinking for two or three minutes.

"No problem. I did something similar."

Lao Shen looks very confident.

The first question was based on derivative knowledge. Lao Shen didn't use grass paper and hardly stopped. The whole question was worked out. The teacher standing on the side nodded and did not disturb him.

The difficulty of mathematical problems is increasing, and the time for old thinking is also increasing.

The last one is a mathematical problem covering double integral knowledge.

To solve this problem alone, Lao Shen spent about 40 minutes, writing two pages of manuscript.

When he handed in the paper, Lao Shen looked at his watch and scratched his head awkwardly. "No, if it's 40 years old, it won't take so long."

The result of the examination came out quickly, and the 7 math questions answered 5.

"You see, the 2 mistakes are the last two or three steps.

If you had been more careful or checked afterwards, you might not have made any mistakes.

However, this score is worth about seven or eight.

"There are two questions on you."

According to the mathematics teacher of the University of science and technology, although Lao Shen has mastered the knowledge of mathematics in ordinary universities, there are too few questions. For example, 2 of them have ingenious solutions, but Lao Shen has gone around a large circle to solve the problem and waste a lot of time.

In addition, Lao Shen's basic knowledge is relatively poor, and the formula that undergraduates should master is not proficient enough.

Strange old man Shen himself studies depression.

Lao Shen, who works in shoe repair business, has only junior high school qualifications. According to the university teacher's judgement, Lao Shen's mathematics knowledge level is similar to that of ordinary undergraduate students, but his knowledge is more extensive than that of ordinary undergraduates.

It turned out that after graduating from Lao Shen junior high school in Jinzhou, Liaoning, she went to work in Shenyang, Hebei and other places. In his spare time, he did not read movies and novels like other workers, but borrowed a high school math book from his brother.

With Lao Shen's words, it was "casually upset" at that time. I did not expect him to solve this problem for 20 years.

Although only the mathematical foundation of junior high school function is available, Lao Shen ate "high school mathematics knowledge" and became interested in solid geometry. Sometimes he took the parts of the site in his hand as a solid geometry mold.

Lao Shen's love for mathematical knowledge started from more than 10 years ago.

In every city and every area, Lao Shen would go to the local large bookstore and second-hand book market when he was loading goods.

Reporters saw that old Shen was carrying bags of mathematical books, almost all of which were in Tianjin Book Building and Xinhua bookstore.

Over the past more than 20 years, Lao Shen has bought nearly 200 books on Mathematics and spent more than 10000 yuan. This is astronomical for his monthly income of only a few hundred yuan.