Displaying similar documents to “Binarity for -categorial weakly o-minimal theories of convexity rank 1.”

On nodal sets and nodal domains on and

Alexandre Eremenko, Dmitry Jakobson, Nikolai Nadirashvili (2007)

Annales de l’institut Fourier

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We discuss possible topological configurations of nodal sets, in particular the number of their components, for spherical harmonics on . We also construct a solution of the equation in that has only two nodal domains. This equation arises in the study of high energy eigenfunctions.

Number of “”s of a Dyck path and -nilpotent ideals of parabolic subalgebras of .

Righi, Céline (2007)

Séminaire Lotharingien de Combinatoire [electronic only]

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a-Weyl's theorem and the single valued extension property.

Mourad Oudghiri (2006)

Extracta Mathematicae

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In the present paper, we study a-Weyl's and a-Browder's theorem for an operator T such that T or T* satisfies the single valued extension property (SVEP). We establish that if T* has the SVEP, then T obeys a-Weyl's theorem if and only if it obeys Weyl's theorem. Further, if T or T* has the SVEP, we show that the spectral mapping theorem holds for the essential approximative point spectrum, and that a-Browder's theorem is satisfied by f(T) whenever f ∈ H(σ(T))....