Linear Algebra Done Right · Problem 7F.6

Operators on Complex Vector Spaces — Sheldon Axler

Mathematics — Linear Algebra · operator-norms

Problem

Prove or give a counterexample: If S,T∈L(V)S, T \in \mathcal{L}(V), then ∥ST∥=∥TS∥\|ST\| = \|TS\|.

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