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- 2Invariant subspaces
- 1Almost invariant subspaces
- 1Banach spaces
- 1Functional Analysis
- 1Hilbert space
- 1Matrix semigroups
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Spring 2011
The first part of the thesis studies invariant subspaces of strictly singular operators. By a celebrated result of Aronszajn and Smith, every compact operator has an invariant subspace. There are two classes of operators which are close to compact operators: strictly singular and finitely...
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