ocess" target="_top">Weiner
          processes</a>, <a href="http://en.wikipedia.org/wiki/Bernoulli_trial" target="_top">Bernoulli
          trials</a>, and their appplication to solve stock market and other
          <a href="http://en.wikipedia.org/wiki/Gambler%27s_ruin" target="_top">ruinous gambling
          games</a>.
        </p>
<p>
          The random variate <span class="emphasis"><em>x</em></span> is constrained to <span class="emphasis"><em>x_min</em></span>
          and <span class="emphasis