Talks given at NuHAG events

Estimates of the spectral radius for refinement and subdivision operators

  Victor Didenko

  given at  strobl07 (18.06.07 16:15)
  id:  516
  length:  25min
  status:  accepted
  type:  talk
The talk presents lower bounds for the spectral radii of refinement and subdivision operators with continuous matrix symbols and with dilations from a class of isotropic matrices. This class contains main dilation matrices used in wavelet analysis. After obtaining
general formulas, two kinds of estimate for the spectral radii are established: viz. -- estimates using point values of the symbols and others involving integrals of different dimensions over designated
subsets of tori. For some symbol classes the exact value of the spectral radius of the refinement operator is found.

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