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lcopula (version 1.0.7)

express_coef_gumb: Gumbel coefficient for Kendall's tau formula

Description

The function is used internally in liouv.Tau.

Usage

express_coef_gumb(index_k, index_l, theta, a)

Value

Gumbel coefficient

Arguments

index_k

first index

index_l

second index

theta

parameter of the corresponding Archimedean copula

a

sum of alphavec