Fuzzy quantifiers, Logical relations of opposition, Formal concept analysis, Fuzzy relational concept analysis

T-scaling quantifiers are special fuzzy quantifiers employed to extract information from datasets in fuzzy relational concept analysis. In this article, we expand the class of t-scaling quantifiers by introducing the so-called \emph{negative t-scaling quantifiers} and \emph{(positive and negative) existential scaling quantifiers}. Then, we explore the logical relations of opposition between fuzzy formal contexts deriving from quantifiers of different types. Finally, we study the consequences of such relations on a special pair of operators used to construct concepts in fuzzy formal concept analysis.