In a broad sense, my research topics in this field are: (a) hydrodynamical and analytic simulations, (b) simulations of strong gravitational lenses, (c) creating mock catalogs, (d) galaxy formation and evolution, (e) dynamical properties of ETGs, (f) modeling of strong gravitational lenses, (g) modeling of mass density profiles in galaxies, (f) dark matter (DM) content  and (g) powerspectrum analysis of kpc scale fluctuations. In the last three years I have concentrated my activity on the study of the main galaxy properties and the understanding the physical processes which shape the galaxy formation, tackling the questions from different points of view. Simulations (theoretical models) and observations are the two line of strategy to achieve the goals of galaxy evolution studies.