JMAT_V1_N1_RP4 Lakehal Belarbi Mohamed Belkhelfa Journal on Mathematics 2277-5137 1 1 34 48 Manifolds with Density, Minimal Surfaces In this paper, the authors write the equation of minimal surfaces in R with linear density (in the case j(x,y,z) = x, j(x,y,z) = y and j(x,y,z) = z), and they characterize some solutions of the equation of minimal graphs in R3 with linear j 3 density = e , and they write the j -Gauss curvature and the j - mean curvature formulae of the revolution surfaces in R with radial density. January - March 2012 Copyright © 2012 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1845