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2 Iterative methods

The modules described in this chapter correspond to iterative methods: conjugate gradient, double conjugate gradient, as well as variants linked to the utilization of different preconditioners.   In addition to the solution modules, we also find all the modules necessary for the construction of linear systems: matrix and RHS assembly modules, modules to impose the boundary conditions, modules to print the data structures, ...

• 2.1 The modules
• 2.2 The algorithms