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On the Number Counting of Polynomial Functions
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作者 Jian Jun JIANG 《Journal of Mathematical Research and Exposition》 CSCD 2010年第2期241-248,共8页
Polynomial functions (in particular, permutation polynomials) play an important role in the design of modern cryptosystem. In this note the problem of counting the number of polynomial functions over finite commutat... Polynomial functions (in particular, permutation polynomials) play an important role in the design of modern cryptosystem. In this note the problem of counting the number of polynomial functions over finite commutative rings is discussed. Let A be a general finite commutative local ring. Under a certain condition, the counting formula of the number of polynomial functions over A is obtained. Before this paper, some results over special finite commutative rings were obtained by many authors. 展开更多
关键词 polynomial functions permutation polynomials finite commutative rings countingformula.
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