The core of a fuzzy set is defined as the set of elements whose membership is equal to one,
or the alpha-cut with \(\alpha = 1\),
$$A_\alpha = \{x \epsilon F \ : \ m \ge 1\}$$
where \(x\) is an element in the fuzzy set, \(F\), and \(m\) is the corresponding membership.
Arguments
create
logical, if FALSE (default) returns the core elements, otherwise returns a Set of the core elements
Value
Core elements in FuzzySet or a Set of the core elements.