Bulletin of the
Korean Mathematical Society BKMS

In this paper, by using operations, some characterizations and some properties of fuzzy lower and upper continuous multifunctions and its weaker and stronger forms including fuzzy lower and upper weakly continuous, fuzzy lower and upper $\theta $-continuous, fuzzy lower and upper strongly $\theta $-continuous, fuzzy lower and upper almost strongly $\theta $-continuous, fuzzy lower and upper weakly $\theta $-continuous, fuzzy lower and upper almost continuous, fuzzy lower and upper super continuous, fuzzy lower and upper $\delta $-continuous, are presented.

Keywords: continuity, fuzzy multifunction

MSC numbers: 54A40