In obtaining the Press Schechter function, the variance on mass scale is differentiated with respect to mass. The variance on a mass scale is a function of wavenumber k through the Power spectrum and transfer function. To eliminate k dependence, some value of k must be inserted into the variance on mass scale. Can someone explain how this is done?(adsbygoogle = window.adsbygoogle || []).push({});

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# A Press Schechter function -- the variance on mass scale

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