(c) If C is the identity matrix and the eigenvalues of B are all not equal to 1, show that V = R"*".

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.6: Introduction To Linear Transformations
Problem 55EQ
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1. Let B and C be given n x n matrices.
(a) Show that U = {X € R*x" : XB = CX} and V = {YB-CY :Y € R"×"}
are both subspaces of R"xn
(b) Compute dim U + dim V. Justify your argument. (Hint: define a suitable
linear transformation T : R"xn →
R"xn.)
(c) If C is the identity matrix and the eigenvalues of B are all not equal to 1,
show that V = R"xr.
Transcribed Image Text:1. Let B and C be given n x n matrices. (a) Show that U = {X € R*x" : XB = CX} and V = {YB-CY :Y € R"×"} are both subspaces of R"xn (b) Compute dim U + dim V. Justify your argument. (Hint: define a suitable linear transformation T : R"xn → R"xn.) (c) If C is the identity matrix and the eigenvalues of B are all not equal to 1, show that V = R"xr.
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