By fixed point index theory and a result obtained by Amann, existence of the solution for a class of nonlinear operator equations x = Ax is discussed. Under sui
The title compound ethyl (2-amino4-(2-chlorophenyl)-4H-benzo-[h]-chromene-2-yl)formate (C22H18C1NO3, Mr=379.82) was synthesized and characterized by X-ray singl