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Orthogonal bases and Jordan normal form
 Kučera, Daniel ; Šaroch, Jan (advisor) ; Barto, Libor (referee)
There exists an ortonormal set of eigenvectors for a linear operator if and only if it commutes with its adjoint endomorphism. The aim of this thesis is to characterize endomorphisms for which there exists a matrix representation with respect to an orthogonal basis in Jordan form. We introduce the notion of unitarily jordanisable endomorphism to capture this property. The proof of the Spectral theorem as well as the existence and uniqueness of Jordan form can be found in the first two chapters. An interesting connection with bilinear forms arises in chapter three and is used to prove that any linear operator with single eigenvalue and the length of Jordan chains bounded by two is unitarily jordanisable. The last chapter is devoted to the discussion of uniqueness of othogonal polar basis for a bilinear form and an algorithm is introduced which can determine whether or not a linear operator is unitarily jordanisable. 1
Detailed record
Orthogonal bases and Jordan normal form
 Kučera, Daniel ; Šaroch, Jan (advisor) ; Barto, Libor (referee)
There exists an ortonormal set of eigenvectors for a linear operator if and only if it commutes with its adjoint endomorphism. The aim of this thesis is to characterize endomorphisms for which there exists a matrix representation with respect to an orthogonal basis in Jordan form. We introduce the notion of unitarily jordanisable endomorphism to capture this property. The proof of the Spectral theorem as well as the existence and uniqueness of Jordan form can be found in the first two chapters. An interesting connection with bilinear forms arises in chapter three and is used to prove that any linear operator with single eigenvalue and the length of Jordan chains bounded by two is unitarily jordanisable. The last chapter is devoted to the discussion of uniqueness of othogonal polar basis for a bilinear form and an algorithm is introduced which can determine whether or not a linear operator is unitarily jordanisable. 1
Detailed record

See also: similar author names
2 KUČERA, Dalibor
17 KUČERA, David
2 Kučera, Dalibor
6 Kučera, Dan
17 Kučera, David
3 Kučera, Dušan
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