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Documents  47B38 | enregistrements trouvés : 2

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Bishop’s operator arose in the fifties as possible candidates for being counterexamples to the Invariant Subspace Problem. Several authors addressed the problem of finding invariant subspaces for some of these operators; but still the general problem is open. In this talk, we shall discuss about recent results on the existence of invariant subspaces which are indeed spectral subspaces for Bishop operators, by providing an extension of a Theorem of Atzmon (Joint work with M. Monsalve-Lopez).
Bishop’s operator arose in the fifties as possible candidates for being counterexamples to the Invariant Subspace Problem. Several authors addressed the problem of finding invariant subspaces for some of these operators; but still the general problem is open. In this talk, we shall discuss about recent results on the existence of invariant subspaces which are indeed spectral subspaces for Bishop operators, by providing an extension of a Theorem ...

47A15 ; 47B37 ; 47B38

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General theory of operator semigroups provides abstract results which can be used to obtain optimal rates of decay or convergence in many evolution equations or dynamical systems. I will describe the abstract results, and indicate how they are obtained and how they can be applied in examples.

47D06 ; 34D05 ; 34G10 ; 47B38

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