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Frames and an extension problem

Ole Christensen
Torsdag, 5 december, 2013, at 16:15, in Aud. D3 (1531-215)
Frames yield expansions of elements in Hilbert spaces that are similar to the ones we know from orthonormal bases; but the technical conditions to a frame are much weaker, which means that we gain extra flexibility. We will discuss the basic theory for frames, both in the abstract setting and for concrete constructions of the Gabor/wavelet type, and also point on open problems that can be formulated in terms of certain non-commutative operators.
Kontaktperson: Bent Ørsted