1.II.22F

Linear Analysis
Part II, 2005

Let KK be a compact Hausdorff space, and let C(K)C(K) denote the Banach space of continuous, complex-valued functions on KK, with the supremum norm. Define what it means for a set SC(K)S \subset C(K) to be totally bounded, uniformly bounded, and equicontinuous.

Show that SS is totally bounded if and only if it is both uniformly bounded and equicontinuous.

Give, with justification, an example of a Banach space XX and a subset SXS \subset X such that SS is bounded but not totally bounded.