Fixed point index approach for solutions of variational inequalities.
Fixed point theory for multivalued maps in Fréchet spaces via degree and index theory
New fixed point results are presented for multivalued maps defined on subsets of a Fréchet space E. The proof relies on the notion of a pseudo open set, degree and index theory, and on viewing E as the projective limit of a sequence of Banach spaces.
Fixed-point-like theorems on subspaces.