代数编码及其应用前沿系列讲座
报告时间:2018年7月18日下午14:00-15:00
报告地点: X7503
主持人:周正春教授
Title: Factorizations of binomial polynomials and enumerations of LCD and Self-dual constacyclic codes
Abstract: Let $\Bbb F_q$ be a finite field with order $q$ and $n$ a positive integer, where $q$ is a positive power of a prime $p$. Suppose that the product of distinct prime factors of $n$ divides $q-1$, i.e. $rad(n)|(q-1)$. In this paper, we explicitly factorize the polynomial $x^{n}-\lambda$ for each $\lambda\in \Bbb F_q^*$. As applications, firstly, we obtain all $\lambda$-constacyclic codes and their dual codes of length $np^s$ over $\Bbb F_q$; secondly, we determine all LCD cyclic codes and LCD negacyclic codes of length $n$ over $\Bbb F_q$; thirdly, we list all self-dual negacyclic codes of length $np^s$ over $\Bbb F_q$.
Bio: 岳勤,南京航空航天大学数学系教授,博士生导师。1996年中国科学技术大学数学系博士学位,师从冯克勤教授。曾访问过意大利、韩国、香港和台湾等地。研究方向为代数数论,代数K理论,和代数编码理论研究,发表论文70余篇,其中SCI文章60多篇,其中包括:J. Reine Angew. Math., Math. Z, IEEE Trans. Inform. Theory等刊物,主持4项国家自然科学基金和2项国际合作项目,江苏省青蓝工程学科带头人。