In August 1, 2010, Mr. Ren delin published a monograph titled "calculus principles and strict theoretical basis" (Science Press ).
In the preface of this book, there is a saying: "We all know that calculus was invented by Newton and levenitz. It was about 60 or 70 s in the 17th century. When did calculus come to China? Here we will introduce a document for your reference: The computing bibliography of the Business Printing Museum (November,), which contains 44 mathematical books published in that year, among them, the part of arithmetic computation, 14 types; the part of arithmetic Abacus computation, 7 types; the part of algebra, 9 types; the part of geometric, 9 types; the part of triangle and micro product, five types, including four types of triangle textbooks and a textbook of calculus, are called the latest textbooks of higher education, micro-accumulation, among the 44 types of books, there are 43 types of mathematics textbooks for primary and secondary schools. This shows that China has already had a complete mathematics education for primary and secondary schools. On the other hand, "micro-product learning" is only one type, and is attached to the "Triangle". It can be seen that calculus has just been introduced to China and is far from being popularized. "
In a speech in April 19, 2009, Mr. Yang zhenning said: "there were only a few Chinese students who knew calculus one hundred years ago, and now all the students who studied mathematics understand it, "Mr. Yang, father of Yang zhenning, obtained a doctorate in mathematics from the University of Chicago in 1928 and returned home to teach at Tsinghua University in the same year. He is very familiar with the introduction of modern mathematics into China. Therefore, mr Yang zhenning's statement is credible. In short, calculus began to spread to China about one hundred years ago.
Remember, in the late autumn of 1957, our new student from the south University of mathematics and astronomy team up to visit the head of the department, Mr. Sun Guangyuan. He showed us the Differential Geometric manuscript he had written many years ago at home. It was a vertical manuscript written with a brush. The handwriting was neat, which surprised us. Mathematical formulas can be written vertically, which is incredible.
Today, millions of college students require calculus courses every year. In the 1970s S, the infinitely small method was introduced into China. In our country, Zhang jinwen (late) and I are the pioneers in the spread of Infinitely small theories. This year, my granddaughter has been admitted to Beijing Institute of Technology and will also take calculus courses. On February 16, July 17, we celebrated our birthday on the same day. I don't have a daughter, so it's my greatest regret in my life. Nowadays, people are old and want to have a caring daughter.
In the history of mankind, the emergence of calculus is short. Writing calculus into the Internet is a new thing. We work tirelessly to write a small calculus e-book every day. Why? In order to integrate the Scientific Thoughts of the infinitely small calculus into our traditional culture, it is integrated into our scientific research. Our generation has been "poor" and we are always afraid of poverty. Now that we are rich, we cannot forget the poor days of the past.