First, the creative background
At 1, 194 1, Shannon joined AT&T. T) Bell Laboratories. The most important problem at that time was how to transmit information quickly and effectively by telegraph and telephone line. The government further requires them to establish a password system and how to find a way to destroy enemy passwords while protecting their own means of communication. Shannon is passionate and interested in information transmission and passwords.
2. Shannon's research achievement on cryptosystem is a paper entitled "Mathematical Theory of Cryptosystem", which was published only after World War II for the sake of confidentiality. Shannon's other paper, Mathematical Theory of Communication, has aroused wider influence and was published in Bell System Technology of 1948.
3. "Mathematical Theory of Communication" spread all over the field of communication engineers a few months after its publication. Since the loyal readers of Bell periodical, information theory has stirred up a thousand waves in the fields of mathematics and engineering. This aroused the interest of Warren Weaver, who later became Shannon's most important promoter. Weaver is the chairman of the natural science branch of Rockefeller Foundation and one of the main sponsors of American science and mathematics research.
Second, release information.
1. The original text of Mathematical Theory of Communication is divided into two parts, which were published in Bell System Technology1July 948 and 10/October respectively. This article was published in 1949. The Theory of Communication Mathematics sold 6000 copies in four years, and 1990 sold more than 50,000 copies.
2. At last, this book contains a part of Shannon's works and two parts of Weaver's explanation. The first part is the original text of Shannon 1948, and the second and third parts are Weaver's interpretation of Shannon's theory in popular language as much as possible. Shanghai Science and Technology Publishing House published Theoretical Basis of Information Theory 1965 in April, which included the Chinese translation of Mathematical Principles of Communication.
Three. Brief introduction of the author
1, Claude Woodshannon (1916—2001), American mathematician, academician of American Academy of Sciences, founder of information theory and digital communication era.
2. 1936, Shannon obtained a bachelor's degree in mathematics and electrical engineering from the University of Michigan; 65438-0938, Master of Electrical Engineering, Massachusetts Institute of Technology. The topic of his master's thesis is symbolic analysis of relays and switching circuits. He used Boolean algebra to analyze and optimize switching circuits, which laid the theoretical foundation for digital circuits. 1940, Shannon received her Ph.D. in mathematics from MIT, and her doctoral thesis was algebra of theoretical genetics. Joined Bell Labs the following year.