In this section, we discuss some general properties of the T-Cauchy family of distributions. The proofs are omitted for straightforward results.
Lemma 1: Let T be a random variable with PDF f T (x), then
(i)
The random variable X = − θ cot(πF Y (T)) follows the T-Cauchy{Y} distribution.
(ii)
The quantile function for T-Cauchy{Y} family is Q X (p) = − θ cot(πF Y (Q T (p))).
The Shannon’s entropy (Shannon 1948) of a random variable X is a measure of variation of uncertainty and it is defined as η X = − E{log(f(X))}. The following proposition provides an expression for the Shannon’s entropy for the T-Cauchy{Y} family.