**讲座题目1：**Fuzzy soft set theory with applications in hyper BCK-algebras

**讲座时间：**9:00

**报告人:** Mohammad Mehdi Zahedi

**讲座内容简介: **In the paper [P.K. Maji, R. Biswas, A.R. Roy, Fuzzy soft sets, J. Fuzzy Math. 9(3) (2001) 589–602], Maji et al. introduced the concept of fuzzy soft sets as a generalization of the standard soft sets, and presented an application of fuzzy soft sets in a decision making problem. The aim of this manuscript is to apply fuzzy soft set for dealing with several kinds of theories in hyper BCK-algebras. The notions of fuzzy soft hyper BCK-ideal, fuzzy soft weak hyper BCK-ideal, fuzzy soft s-weak hyper BCK-ideal and fuzzy soft strong hyper BCK-ideal are introduced, and related properties and relations are investigated.

**讲座人简介：**Mohammad Mehdi Zahedi is a professor of Mathematics, Kerman Graduate University of Advanced Technology, Iran. He received his PhD in Shahid Bahonar University of Kerman, Iran. He has performed more than 26 Research projects including 2 National projects, and he has published more than 200 papers in several journals. He is the editor-in-chief of Iranian Journal of Fuzzy Systems. His research areas are algebraic hyperstructures，fuzzy mathematics.

**讲座题目2：**Fuzzy graphs with applications

**讲座时间：**10:30

**报告人:** Rajab Ali Borzooei

**讲座内容简介: **Fuzzy graph theory is finding an increasing number of applications in modeling real time systems where the level of information inherent in the system varies with different levels of precision. Fuzzy models are becoming useful because of their aim in reducing the differences between the traditional numerical models used in engineering and sciences and the symbolic models used in expert systems. Now, in this talk, we investigate some concepts in the theory of fuzzy graphs, such as completeness, regularity and irregularity, cycles and cocycles, domination, matching, fuzzy coloring and chromatic numbers. Then we introduce some generalization of fuzzy graphs such as intuitionistic fuzzy graphs, interval-valued fuzzy graphs, m-polar fuzzy graphs and vague graphs. Finally we present some of the real applications of fuzzy graphs.

**讲座人简介：**Rajab Ali Borzooei is a professor of Department of Mathematics, Shahid Beheshti University, Tehran, Iran. He has received his Ph.D. at University of Kerman. He has published 201 papers in several journals. He is working as the managing editor of Iranian Journal of Fuzzy Systems. His research areas are algebra (general algebra, logical algebras)，algebraic hyperstructures，fuzzy mathematics, algebraic graphs and fuzzy graphs.