c(
person("Marek", "Gagolewski", role = c("aut", "cre"),
email = "gagolews@rexamine.com"),
person("Jan", "Caha", role = "ctb",
email = "jan.caha@klikni.cz"))
S4 classes and methods
to deal with fuzzy numbers. With them you can compute any arithmetic
operations (e.g. by using the Zadeh extension principle),
perform approximation of arbitrary FNs by trapezoidal and piecewise
linear FNs, prepare plots of FNs for publications, calculate
possibility and necessity values for comparisons, etc.

S4 classes and methods
to deal with fuzzy numbers. They allow for computing any arithmetic
operations (e.g., by using the Zadeh extension principle),
performing approximation of arbitrary FNs by trapezoidal and piecewise
linear FNs, preparing plots of FNs for publications, computing
possibility and necessity values for comparisons, etc.

S4 classes and methods
to deal with fuzzy numbers. They allow for computing any arithmetic
operations (e.g., by using the Zadeh extension principle),
performing approximation of arbitrary fuzzy numbers by trapezoidal
and piecewise linear ones, preparing plots for publications, computing
possibility and necessity values for comparisons, etc.

c(
person("Marek", "Gagolewski", role = c("aut", "cre"),
email = "marek@gagolewski.com",
comment = c(ORCID = "0000-0003-0637-6028")),
person("Jan", "Caha", role = "ctb",
email = "jan.caha@klikni.cz"))
Marek Gagolewski [aut, cre] (<https://orcid.org/0000-0003-0637-6028>),
Jan Caha [ctb]

Apply Two Fuzzy Numbers on a Monotone Function
One can easily draw the membership function of f(x,y) by package 'FuzzyNumbers.Ext.2' in which f(.,.) is supposed monotone and x and y are two fuzzy numbers. This work is possible using function f2apply() which is an extension of function fapply() from Package 'FuzzyNumbers' for two-variable monotone functions.

One can easily draw the membership function of f(x,y) by package 'FuzzyNumbers.Ext.2' in which f(.,.) is supposed monotone and x and y are two fuzzy numbers. This work is possible using function f2apply() which is an extension of function fapply() from Package 'FuzzyNumbers' for two-variable monotone functions. Moreover, the ability of computing the core, support and alpha-cuts of the result is added to the Version 2.0.