:m) ) )^power;
        </li>
        <li>
          f(x) = c * product ( x(1:m)^e(1:m) ) on the surface of
          an m-dimensional unit sphere;
        </li>
        <li>
          f(x) = c * product ( x(1:m)^e(1:m) ) in an m-dimensional ball;
        </li>
        <li>
          f(x) = c * product ( x(1:m)^e(1:m) ) in the unit m-dimensional simplex;
        </li>
        <li>
          f(x) = product ( abs ( 4 * x(1:m) - 2 ) + c(1:m) ) 
          / ( 1 + c(1:m) ) );
        </li>
        <li>
          