Measure, Integration & Real Analysis · Problem 10A.7
Linear Maps on Hilbert Spaces — Sheldon Axler
Mathematics — Measure Theory · inverse-map-continuous
Problem
Suppose V is a Hilbert space and Inv(V) is the set of invertible bounded operators on V. Think of Inv(V) as a metric space with the metric it inherits as a subset of B(V). Show that T↦T−1 is a continuous function from Inv(V) to Inv(V).