Qn                      Helper function
U                       Helper function
Z                       Helper function: min/max
dkend                   PDF of Kendall stable distribution
estimate_stable_alpha   Fit alpha parameter using MLE for distribution
                        with one parameter
fit_kendall             Fit stable Kendall distribution for given data
                        and m_alpha function.
fit_separate            Function for fitting stable Kendall
                        distribution separately to two parts of data
fit_stable_alpha        Fit stable Kendall distribution with one
                        parameter (alpha)
full_loglik_gradient    Gradient of minus loglikelihood for stable
                        Kendall distribution with 3 parameters.
full_minus_loglik       Negative loglikelihood for stable Kendall
                        distr. with 3 parameters.
g_function              Function G(t) - Williamson transform taken at
                        point 1/t.
g_function_single       Function G(t) - Williamson transform taken at
                        point 1/t.
kendallRandomWalks      kendallRandomWalks: explore and visualize
                        Kendall random walks.
kendall_loglik          Log-likelihood for stable kendall distribution
                        with m_alpha = 1
ladder_height           Estimate the distribution of first ladder
                        height for given level
ladder_moment           Estimate the distribution of first ladder
                        moment for given level
ladder_moment_pmf       Distribution of the first ladder moment.
mutate_kendall_rw       Mutate each trajectory.
pkend                   CDF of Kendall stable distribution
pkendSym                CDF of symmetrical Kendall stable distribution
plot.kendall_barrier_crossing
                        Generic function for plotting results of
                        ladder_moment function.
plot.kendall_fit        QQ-plot for the result of fitting stable
                        Kendall distribtion.
plot.kendall_simulation
                        Generic function that draws simulated
                        trajectories of Kendall random walk
plot.kendall_summary    Plot summary of Kendall random walk
                        simulations.
print.kendall_barrier_crossing
                        Generic function for printing result of
                        ladder_moment function
print.kendall_simulation
                        Generic function that prints information about
                        simulated Kendall random walk
print.kendall_summary   Print summary of Kendall random walk
                        simulations.
qkend                   Quantiles of Kendall stable distribution
qkendSym                Quantiles of symmetrical Kendall stable
                        distribution
rkend                   Pseudo-random number from Kendall stable
                        distribution
simulateOneTrajectory   Simulate one trajectory ofa Kendall random walk
simulate_kendall_rw     Simulate multiple trajectories of Kendall
                        random walk
summarise_kendall_rw    Calculate some characteristic for every
                        simulated instance.
transform_kendall_rw    Transforming (scaling and shifting) Kendall
                        random walks
