... Let us consider the composed random variable η =νk=1ξk, where ξ1, ξ2, are independent identically distributed random variables and ν is a positive value random, independent of all ξk.In ... Physics 23 (2007) 70-74On the stability of the distribution function of the composed random variables by their index random variableNguyen Huu Bao∗Faculty of Infomation Technology, Water Resources ... of ν.1. IntroductionLet us consider the random variable (r.v):η =νk=1ξk(1)where ξ1, ξ2, are independent identically distributed random variables with the distribution functionF...