Solution
= Solution
The endpoint duals are
$$
(\ell^1)^*\cong\ell^\infty,\qquad (c_0)^*\cong\ell^1,
$$
under the same coordinate pairing $\langle x,y\rangle=\sum_nx_ny_n$.
= Solution
The endpoint duals are
$$
(\ell^1)^*\cong\ell^\infty,\qquad (c_0)^*\cong\ell^1,
$$
under the same coordinate pairing $\langle x,y\rangle=\sum_nx_ny_n$.