shamrock.phys.get_dM_mat_4# shamrock.phys.get_dM_mat_4(arg0: shamrock.math.SymTensorCollection_f64_1_4, arg1: shamrock.math.SymTensorCollection_f64_0_3) → shamrock.math.SymTensorCollection_f64_1_4# FMM math demo FMM math demo