begin{equation}
U^*=arg underset{U}{max } sum _{m=1}^M  omega _m left[ln left(P_{Lambda _m} (X(U,m)|C)right)- omega _{text{KLD}} D_{Lambda_m}left(C(U),Cright)right]
end{equation}

begin{equation}
begin{split}
U^*=arg underset{U}{max } sum _{m=1}^M  & omega _m left[ln left(P_{Lambda _m} (X(U,m)|C)right)- \
 &quad omega _{text{KLD}} D_{Lambda_m}left(C(U),Cright)right]
end{split}
end{equation}