   $(\widetilde{q}_{0}\odot \widetilde{s}$, $\widetilde{p}_{0}\odot \widetilde{s}$)   ----------------- ---------------------------------------------------------------------------------- ------------------------------------------- ----------------------------------------------------------------------------------      $\epsilon$                                   ($[0.0, 0], [0.0, 0]$)                                $\widetilde{b}\widetilde{a}