alpha_cuts              Alpha-cuts, support, core and membership of
                        fuzzy numbers
as_crisp                Crisp representatives of fuzzy numbers
as_fuzzy_number         Coerce to a 'fuzzy_number', unwrapping data
                        frame columns
c.fuzzy_number          Combine fuzzy numbers
defuzz                  Defuzzification of fuzzy numbers
defuzz.fcox             Defuzzification of fuzzy Cox coefficients
defuzz.fkm              Defuzzification of an 'fkm' fit
exp.fuzzy_number        Exponential of a fuzzy number
fcox                    Fuzzy Cox proportional hazards model
fkm                     Fuzzy Kaplan-Meier estimator
fkm_fuzzy_surv          Fuzzy survival curve as fuzzy numbers
flogrank                Fuzzy log-rank test for a difference between
                        two groups
fuzzy-arith             Arithmetic on fuzzy numbers
fuzzy_dfs               Simulated disease-free survival with vague
                        event times
fuzzy_number            Vague (fuzzy) quantities on the real line
fuzzy_spread            Width (diffusion) of fuzzy numbers
fuzzy_surv              Survival data with vague times or vague failure
                        indicators
is_crisp                Is a fuzzy number crisp?
is_fuzzy_number         Test whether an object is a fuzzy number
plot.fkm                Plot fuzzy Kaplan-Meier curves
plot.fuzzy_number       Plot the membership function of fuzzy numbers
sim_fuzzy_surv          Simulate survival data with vague event times
                        and vague indicators
summary.fcox            Summaries and plots of a fuzzy Cox fit
summary.fkm             Summaries of a fuzzy Kaplan-Meier fit
