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Item Details
| Title:
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SELF-SIMILARITY AND MULTIWAVELETS IN HIGHER DIMENSIONS
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| By: |
Carlos A. Cabrelli, Christopher Heil, Ursula M. Molter |
| Format: |
Paperback |
| List price:
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£59.50 |
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We currently do not stock this item, please contact the publisher directly for
further information.
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| ISBN 10: |
0821835203 |
| ISBN 13: |
9780821835203 |
| Publisher: |
AMERICAN MATHEMATICAL SOCIETY |
| Pub. date: |
15 April, 2004 |
| Series: |
Memoirs of the American Mathematical Society No. 170 |
| Pages: |
82 |
| Description: |
Let $A$ be a dilation matrix, an$n \times n$ expansive matrix that maps a full-rank lattice $\Gamma \subset \R^n$ into itself. Let $\Lambda$ be a finite subset of$\Gamma$, and for $k \in \Lambda$ let $c_k$ be $r \times r$ complex matrices. |
| Synopsis: |
Let $A$ be a dilation matrix, an$n \times n$ expansive matrix that maps a full-rank lattice $\Gamma \subset \R^n$ into itself. Let $\Lambda$ be a finite subset of$\Gamma$, and for $k \in \Lambda$ let $c_k$ be $r \times r$ complex matrices. The refinement equation corresponding to $A$,$\Gamma$, $\Lambda$, and $c = \set{c_k}_{k \in \Lambda}$ is $f(x) = \sum_{k \in \Lambda} c_k \, f(Ax-k)$. A solution $f \colon \R^n \to \C^r$, if one exists, is called a refinable vector function or a vector scaling function of multiplicity $r$. In this manuscript we characterize the existence of compactly supported $L^p$ or continuous solutions of the refinement equation, in terms of the $p$-norm joint spectral radius of a finite set of finite matrices determined by the coefficients $c_k$.We obtain sufficient conditions for the $L^p$ convergence ($1 \le p \le \infty$) of the Cascade Algorithm $f^{(i+1)}(x) = \sum_{k \in \Lambda} c_k \, f^{(i)}(Ax-k)$, and necessary conditions for the uniform convergence of the Cascade Algorithm to a continuous solution.We also characterize those compactly supported vector scaling functions which give rise to a multiresolution analysis for $L^2(\R^n)$ of multiplicity $r$, and provide conditions under which there exist corresponding multiwavelets whose dilations and translations form an orthonormal basis for $L^2(\R^n)$. |
| Publication: |
US |
| Imprint: |
American Mathematical Society |
| Returns: |
Returnable |
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