................................................................................................................................................ iv Acknowledgement ............................................................................................................................... vi Table of

In this paper, a robust controller for a Six Degrees of Freedom (6 DOF) coaxial trirotor helicopter control is proposed in presence of defects in the system. A control strategy based on the coupling of the interval type-2 fuzzy logic control and sliding mode control technique are used to design a controller. The main purpose of this work is to eliminate the chattering phenomenon and guaranteein...

In this paper we summarize some fundamental results on left-continuous t-norms. First we study the nilpotent minimum and related operations in considerable details. This is the very first example of a left-continuous but not continuous t-norm in the literature. Then we recall some recent extensions and construction methods.

In the spirit of this enlightening conversation and indeed of this entire volume—promoting mutual understanding and learning between philosophers, logicians and linguists working on vagueness related issues—I shall in these comments consider three points, which if not kept in mind have significant potential to promote misunderstanding between practitioners of these three disciplines. All three ...