On p-parameter bifurcation of an n-dimensional function-germ.
On removable singularities of p-harmonic maps
On self-dual pseudo-connections on some orbifolds.
On the Arnold conjecture for weakly monotone symplectic manifolds.
On the biharmonicity of product maps.
On the concentration of solutions of singularly perturbed Hamiltonian systems in .
On the Conley index in Hilbert spaces in the absence of uniqueness
Consider the ordinary differential equation (1) ẋ = Lx + K(x) on an infinite-dimensional Hilbert space E, where L is a bounded linear operator on E which is assumed to be strongly indefinite and K: E → E is a completely continuous but not necessarily locally Lipschitzian map. Given any isolating neighborhood N relative to equation (1) we define a Conley-type index of N. This index is based on Galerkin approximation of equation (1) by finite-dimensional ODEs and extends...
On the continuity of harmonic mappings and the Boundary.
On the energy of sections of trivializable sphere bundles.
On the equivalence of variational problems. III
On the Equivariant Morse Chain Complex of the Space of Closed Curves.
On the evolution of harmonic mappings of Riemannian surfaces.
On the existence and non-existence of closed trajectories for some Hamiltonian flows.
On the Existence of Closed Geodesics on Spherical Manifolds.
On the existence of escaping geodesics.
On the existence of free vibrations for a beam equation when the period is an irrational multiple of the length
The author examined non-zero -periodic (in time) solutions for a semilinear beam equation under the condition that the period is an irrational multiple of the length. It is shown that for a.e. (in the sense of the Lebesgue measure on ) the solutions do exist provided the right-hand side of the equation is sublinear.
On the existence of geodesics in static Lorentz manifolds with singular boundary
On the Existence of Harmonic Diffeomorphisms Between Surfaces.
On the existence of harmonic maps from a surface into the real projective plane
On the existence of Harmonic Morphisms form Symmetric spaces of rank one.