shamrock.phys.get_dM_mat_2# shamrock.phys.get_dM_mat_2(arg0: shamrock.math.SymTensorCollection_f64_1_2, arg1: shamrock.math.SymTensorCollection_f64_0_1) → shamrock.math.SymTensorCollection_f64_1_2# FMM math demo FMM math demo