A Class of Dilation Integral Equations

J. C. S. de Miranda, A. P. Franco Filho


We present a class of dilation integral equations. The equations in this class depend on a dilation parameter $a\in\mathbb{R}.$ The existence of non trivial solutions in $L^1(\mathbb{R})$ is studied as a function of the dilation parameter. The main result establishes the non existence of these solutions for $|a|<1,$ a necessary and sufficient condition for the existence of solutions with non vanishing integrals in case $|a|>1,$ and sufficient conditions for these equations to have no solutions but the trivial one or to have an infinitude of non trivial solutions in case $|a|=1.$ In all these cases, the dimension of the space of $L^1(\mathbb{R})$-solutions is determined. When $|a|>1$ we have succeeded in writing the frequency domain representation of the solutions as convergent infinite products.

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DOI: https://doi.org/10.5539/jmr.v4n3p1

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Journal of Mathematics Research   ISSN 1916-9795 (Print)   ISSN 1916-9809 (Online)

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