         to the Poisson distribution.
        </p>
<p>
          The geometric distribution is a special case where the successes parameter
          r = 1, so only a first and only success is required. geometric(p) = negative_binomial(1,
          p).
        </p>
<p>
          The Poisson distribution is a special case for large successes
        </p>
<p>
          poisson(&#955;) = lim <sub>r &#8594; &#8734;</sub>  &#160; negative_binomial(r, r / (&#955; + r)))
        </p>
<div class="caution"><table bo