Let T be a linear operator on a vector space V, and let W be a T-invariant subspace of V. Prove that W is g(T)-invariant for any polynomial g(t).

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.1: Vector Spaces And Subspaces
Problem 37EQ: In Exercises 24-45, use Theorem 6.2 to determine whether W is a subspace of V. 37. V = P, W is the...
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Let T be a linear operator on a vector space V, and let W be a T-invariant subspace of V. Prove that W is g(T)-invariant for any polynomial g(t).

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