<p>Well, basically pseudorandom generators are a topic for either discrete mathematics (theoretical part) or something I used to call "computational science" (practical part) -- there is a SE for both (<a href="https://math.stackexchange.com/">Math.SE</a> and <a href="https://scicomp.stackexchange.com/">SciComp.SE</a>).</p>

<p>Your question seems to be more theoretical, so it might get a better attention on Math.SE; in fact this is what close-voters think.</p>
