Supported by the National Natural Science Foundation (10471034) ;Supported by the Provincial Foundationof Outstanding Young Scholars of Henan (0512000100) ;Supported by the Foundation of Henan University (05YBZR013)
In this paper, we give a Z 2 index theory of generalized critical point. By this theory we get a sufficient condition on the existing result of a class functional, as an example we give a new result that the equa...