5. Let M, and M, in Prob. 4 be closed subspaces. Show that then T(M,)< M, if and only if M,+> T*(M,*).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Only solve Question no.5 (Question no.4 I uploaded due to term and conditions).

4. Let H, and H2 be Hilbert spaces and T: H →H, a bounded linear
operator. If M¡cH¸ and M,c H2 are such that T(M,)c M2, show that
M,+> T*(M;*).
Transcribed Image Text:4. Let H, and H2 be Hilbert spaces and T: H →H, a bounded linear operator. If M¡cH¸ and M,c H2 are such that T(M,)c M2, show that M,+> T*(M;*).
5. Let M, and M, in Prob. 4 be closed subspaces. Show that then
T(M,)< M2 if and only if M,+> T*(M2*).
Transcribed Image Text:5. Let M, and M, in Prob. 4 be closed subspaces. Show that then T(M,)< M2 if and only if M,+> T*(M2*).
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