Fixed points of involutive interval-valued negations
Different from involutive negations on [0,1], the fixed points of an involutive interval-valued negation are uncountable. In this paper, all the fixed points of an involutive interval-valued negation are characterized. Also, it is proved that an involutive interval-valued negation is uniquely determined by its fixed points. Moreover, a constructive representation of involutive interval-valued negations is obtained. (C) 2011 Elsevier B.V. All rights reserved.
fixed points involutive interval-valued negations interval-valued negations