shamrock.phys.get_dM_mat_3# shamrock.phys.get_dM_mat_3(arg0: shamrock.math.SymTensorCollection_f64_1_3, arg1: shamrock.math.SymTensorCollection_f64_0_2) → shamrock.math.SymTensorCollection_f64_1_3# FMM math demo FMM math demo