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Continuous wavelet transforms from semidirect products: Cyclic representations and Plancherel measure

Hartmut Fuehr·Matthias Mayer
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Abstract

Continuous wavelet transforms arising from the quasiregular representation of a semidirect product of a vector group with a matrix group -- the so-called dilation group -- have been studied by various authors. Recently the attention has shifted from the irreducible case to include more general dilation groups, for instance cyclic (more generally: discrete) or one-parameter groups. These groups do not give rise to irreducible square-integrable representations, yet it is possible (and quite simple) to give admissibility conditions for a large class of them. We put these results in a theoretical context by establishing a connection to the Plancherel theory of the semidirect products, and show how the admissibility conditions relate to abstract admissibility conditions which use Plancherel theory.

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Hartmut Fuehr, Matthias Mayer. 2001-02-02. Continuous wavelet transforms from semidirect products: Cyclic representations and Plancherel measure. https://arxiv.org/abs/math-ph/0102002

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