) 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 EV. Prove that T descends to a linear map on the quotient V\W that commutes with n. That is, show that the map T : V\W →V\W_defined by T(v+W):= T(v)+W is a well-defined linear operator on V \ W that satisfies ŋT = Tŋ.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.4: Linear Transformations
Problem 34EQ
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(8) Let ? be a linear operator on a vector space ? and let ? be a ?-invariant subspace of ? .

(8) 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.
Prove that T descends to a linear map on the quotient V\W that commutes with
n. That is, show that the map T:V\W →V\W defined by T (v+W) := T(v)+W
is a well-defined linear operator on V\ W that satisfies T = Tn.
Transcribed Image Text:(8) 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. Prove that T descends to a linear map on the quotient V\W that commutes with n. That is, show that the map T:V\W →V\W defined by T (v+W) := T(v)+W is a well-defined linear operator on V\ W that satisfies T = Tn.
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