continuous and discrete time linear systems</b></p>
         <p>Go to directory <tt>applications/NLP_AMPL</tt>. We solve the problem of stability of a time invariant linear (discrete) system using Lyapunov theory. The problem is formulated
            as a LMI system <tt>A'*P + P*A &lt; 0</tt> , <tt>P &gt; I</tt> (continuous time) or <tt>A'*P*A - P &lt; 0</tt> , <tt>P &gt; I</tt> (discrete time) with respect to <tt>P</tt>. We minimize the trace of <tt>P</tt>. The user can easily modify the bounds in the LMI