numerical_solution   47 src/linHeat_algo.h   Grid::Scal_FEfun numerical_solution {"numerical_solution", grid};
numerical_solution   54 src/linHeat_algo.h   const Io::L2H1_calculator err_cal {grid, exact_solution, numerical_solution};
numerical_solution   57 src/linHeat_algo.h   Io::Paraview paraview_plot {data, grid, exact_solution, numerical_solution};
numerical_solution   59 src/linHeat_algo.h   init_data.interpolate(numerical_solution);
numerical_solution   61 src/linHeat_algo.h   solver.mass_matrix(numerical_solution, tmp_fef);
numerical_solution   72 src/linHeat_algo.h     solver.solve(tmp_fef, numerical_solution);
numerical_solution   73 src/linHeat_algo.h     solver.mass_matrix(numerical_solution, tmp_fef);