Let T1, T2 : V → V be linear transformations satisfying Tị • T2 = ly (where 1y denotes the identity linear transformation from V to itself). Show that T2 • T1 = 1y when V is finite-dimensional, but that this need not be the %3D case in general when V is infinite dimensional.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Q5
Let T1, T2 : V → V be linear transformations satisfying Tị • T2 = 1y
(where ly denotes the identity linear transformation from V to itself). Show
that T2 • T1 = 1y when V is finite-dimensional, but that this need not be the
case in general when V is infinite dimensional.
Transcribed Image Text:Q5 Let T1, T2 : V → V be linear transformations satisfying Tị • T2 = 1y (where ly denotes the identity linear transformation from V to itself). Show that T2 • T1 = 1y when V is finite-dimensional, but that this need not be the case in general when V is infinite dimensional.
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