The purpose of this article is to develop a numerical scheme for a system of optimality conditions for a smooth minimization problem that arises in tomographic reconstruction of binary axially symmetric objects. The density function of the object with the Lagrange multipliers is seen as a saddle point of an associated Lagrangian. then we use the Usawa scheme mixed with descent gradien... https://poolsproductscanadas.shop/product-category/pentair-triton-c-parts/