Periodic trajectories of a class of Lorentz-metrics of a time-dependent gravitational field.
Infinitely many spacelike periodic trajectories on a class of Lorentz manifolds
The Dirichlet-problem for harmonic maps from the disk into a lorentzian warped product
On a bifurcation problem arising in cholesteric liquid crystal theory
In a cholesteric liquid crystal the director field tends to form a right-angle helicoid around a twist axis in order to minimize the internal energy; however, a fixed alignment of the director field at the boundary (strong anchoring) can give rise to distorted configurations of the director field, as oblique helicoid, in order to save energy. The transition to this distorted configurations depend on the boundary conditions and on the geometry of the liquid crystal, and it is known as Freedericksz...
Remarks on periodic solutions, with prescribed energy, for singular Hamiltonian systems
La valutazione teorica di spostamenti e rotazioni in fase anelastica negli elementi monodimensionali in cemento armato
Si presenta una metodologia di calcolo per valutare lo stato deformativo, in termini di curvature, rotazioni e spostamenti, negli elementi monodimensionali in cemento armato soggetti a carichi monotoni in regime anelastico. In particolare si tiene conto dello scorrimento acciaio calcestruzzo, e della collaborazione offerta dal calcestruzzo teso fra due successive lesioni. Si presenta il sistema di equazioni non-lineari che regge il problema, con le relative condizioni al contorno, e si discute in...
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