Displaying similar documents to “Orthogonal harmonic analysis of fractal measures.”

κ-deformation, affine group and spectral triples

Bruno Iochum, Thierry Masson, Andrzej Sitarz (2012)

Banach Center Publications

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A regular spectral triple is proposed for a two-dimensional κ-deformation. It is based on the naturally associated affine group G, a smooth subalgebra of C*(G), and an operator 𝓓 defined by two derivations on this subalgebra. While 𝓓 has metric dimension two, the spectral dimension of the triple is one. This bypasses an obstruction described in [35] on existence of finitely-summable spectral triples for a compactified κ-deformation.

Boolean algebras of projections and ranges of spectral measures

Okada S., Ricker W. J.

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CONTENTSIntroduction...............................................................................51. Preliminaries.........................................................................72. Relative weak compactness of the range............................133. Closed spectral measures...................................................164. Spectral measures and B.a.'s of projections........................22References..............................................................................45 ...

Spectral subspaces for the Fourier algebra

K. Parthasarathy, R. Prakash (2007)

Colloquium Mathematicae

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In this note we define and explore, à la Godement, spectral subspaces of Banach space representations of the Fourier-Eymard algebra of a (nonabelian) locally compact group.