×ØÖ ØºWe establish some asymptotic expansions for infinite weighted convolution of distributions having regular varying tails. Various applications to statistics and probability are developed.ÅË ¾¼¼¼ ËÙ Ø Ð ×× ¬ Ø ÓÒ× Primary: 41A60, 60F99. Secondary: 41A80, 44A35, 60E07, 60G50, 60K05, 60K25, 62E17, 62G32.