This paper begins with the classical representation theorems for certain class of harmonicrnfunctions in the unit disc, together with some basic results on boundary behavior and somerndiscussion of subhamonic functions.rnThe Hardy spaces are certain space of holomorphic functions on the unit disk. They werernintroduced by Frigyes Riesz (Riesz 1923), who named then after G.H.Hardy, because of thernpaper (Hardy 1915)rnThe Hardy space HP for 0