# The Big Three Pt. 6 - Closed Graph Theorem with Applications

Desvl at
(Before everything: elementary background in topology and vector spaces, in particular Banach spaces, is assumed.)A surprising result of Banach spacesWe can define several relations between two norms. Suppose we have a topological vector space $$X$$ and two norms $$\lVert \cdot \rVert_1$$ and \(\lVe……