Prove that if T is diagonalizable then T is diagonalizable.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.4: Linear Transformations
Problem 24EQ
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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. Let n : V →V\W be the usual quotient map sending n(v) = v+W for v E V.
T descends to a linear map on the quotient V\ W that commutes with
that the map T :V\W →V\W defined by T(v+W)
n. That is,
is a well-defined linear operator on V\ W that satisfies nT = Tn.
:= T(v)+W
Tn.
(10) Prove that if T is diagonalizable then T is diagonalizable.
Transcribed Image Text:Let T be a linear operator on a vector space V and let W be a T-invariant subspace of V. Let n : V →V\W be the usual quotient map sending n(v) = v+W for v E V. T descends to a linear map on the quotient V\ W that commutes with that the map T :V\W →V\W defined by T(v+W) n. That is, is a well-defined linear operator on V\ W that satisfies nT = Tn. := T(v)+W Tn. (10) Prove that if T is diagonalizable then T is diagonalizable.
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