Critical points of some non-coercive functionals 
                      and sub-harmonic solutions

                                   by

                              Klaus Schmitt
               Department of Mathematics, University of Utah


                   JTB 110, 3:30pm Monday, April 19, 1999

       
                                Abstract
 
There are many variational tools for determining the existence
of critical points of functionals, e.g. minimization techniques,
saddle point theorems, mountain pass results. In the lecture I shall 
discuss results about critical points for functionals which are not 
necessarily coercive and give several applications to nonlinear pde's 
including results about periodic and sub harmonic solutions 
of some nonlinear oscillators.