ass.inverse()</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;00076 Omega\_square=A.eigenvalues()</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;00077 </div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;00078 #calculating W and time period</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;00079 Omega=zero\_matrix(RR,Number\_of\_storeys,1)</div>
<div class="line"><a name