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发表于 2025-4-1 03:48:17
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发表于 2025-4-1 07:20:59
Frames Containing a Riesz Basis and Approximation of the Inverse Frame Operator,fficients. Calculations of those coefficients and many other situations where frames occur, require knowledge of the inverse frame operator. But usually it is hard to invert the frame operator if the underlying Hilbert space is infinite dimensional. We introduce a method for approximation of the inv
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发表于 2025-4-1 10:11:49
Kronecker Type Convolution of Function Vectors with one Refinable Factor,he investigations in of convolved refinable function vectors .,function vectors which are solutions of matrix refinement equations. Here, going further, we consider also the case where only one factor of the convolution is refinable showing how the properties of the unique refinable vector can b