9. Let T be an operator on an n-dimensional vector space V over a field F. (a) If T has n distinct eigenvalues prove that T is diagonalizable. If T is diagonaziable prove that the characteristic polynomial of T splits over F. (c) Give an example of an operator T such that the characteristic polynomial of T splits but T is not diagonalizable.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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**Question 9:**

Let \( T \) be an operator on an \( n \)-dimensional vector space \( V \) over a field \( F \).

(a) If \( T \) has \( n \) distinct eigenvalues, prove that \( T \) is diagonalizable.

(b) If \( T \) is diagonalizable, prove that the characteristic polynomial of \( T \) splits over \( F \).

(c) Give an example of an operator \( T \) such that the characteristic polynomial of \( T \) splits but \( T \) is not diagonalizable.
Transcribed Image Text:**Question 9:** Let \( T \) be an operator on an \( n \)-dimensional vector space \( V \) over a field \( F \). (a) If \( T \) has \( n \) distinct eigenvalues, prove that \( T \) is diagonalizable. (b) If \( T \) is diagonalizable, prove that the characteristic polynomial of \( T \) splits over \( F \). (c) Give an example of an operator \( T \) such that the characteristic polynomial of \( T \) splits but \( T \) is not diagonalizable.
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