What is the dual space of $X = (C_\infty(\mathbb{R}^n),\|\cdot\|_\infty)$, the continous functions that approach zero at infinity? Is it reflexive?
Additionally, is there a Banach space $Y$ such that $X=Y'$?
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4The dual is the space of finite signed measures on $\mathbb R^n$. No, it is not reflexive. No, it is not a dual of a Banach space. It looks like you need to read a textbook on Banach spaces... – GEdgar Feb 18 '13 at 14:36
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Probably I do need precisely that. Any suggestions? – Jas Ter Feb 18 '13 at 14:52
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Think yourself about the "discrete analogue" $c_0$. – Jochen Feb 18 '13 at 16:23