shamrock.phys.offset_dM_mat_2# shamrock.phys.offset_dM_mat_2(dM: shamrock.pyshamrock.math.SymTensorCollection_f64_1_2, from: f64_3, to: f64_3) → shamrock.pyshamrock.math.SymTensorCollection_f64_1_2# FMM math demo FMM math demo