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    Dilation

    D-EWXAT

    Let \(\phi\colon\RR^n\to\CC\) be a function and let \(t>0\). The dilation of \(\phi\) by \(t\) is the function \(\phi_t\colon\RR^n\to\CC\) given by \[ \phi_{t}(x) \coloneqq t^{-n} \phi\qty{t^{-1} x}. \]

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