melasma is a common acquired skin disorder. while different treatments are currently being used, in many cases it is refractory to treatment. according to the effects of topical steroids in decreasing skin pigmentation, we studied the efficacy of this new method for treatment of melasma. a total of 42 women with facial melasma, admitted to the department of dermatology of hamadan, were enrolled...

In this article, we apply common fixed point results in incomplete metric spaces to examine the existence of a unique common solution for the following systems of Urysohn integral equations and Volterra-Hammerstein integral equations, respectively: [Formula: see text] where [Formula: see text]; [Formula: see text] and [Formula: see text], [Formula: see text] and [Formula: see text] where [Formu...

In this paper, we prove that the double inequalities [Formula: see text] hold for all [Formula: see text] with [Formula: see text] if and only if [Formula: see text], [Formula: see text] , [Formula: see text] and [Formula: see text] , where [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text] are the Toader, geometric, arithmetic and two Neu...