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scientific article; zbMATH DE number 3894564
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scientific article; zbMATH DE number 3894564

    Statements

    1984
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    ray asymptotics
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    complex spectra
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    elastic normal mode surface waves
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    waveguide
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    material and geometrical properties varying smoothly in the lateral directions
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    unstretched coordinates
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    eiconal equation
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    number of transport equations
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    eigenproblem of the eiconal operator
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    self- adjointness
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    local inner product spaces, LIPS
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    LIPS-valued transport equations
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    reduced to a set of matricial propagation equations
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    local spectral amplitude vectors
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