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math.FA2014
Bifurcation of critical points along gap-continuous families of subspaces
Anna Maria Candela, Nils Waterstraat
We consider the restriction of twice differentiable functionals on a Hilbert space to families of subspaces that vary continuously with respect to the gap metric. We study bifurcat…
math.DG2014★ 3 cited
Connection by geodesics on globally hyperbolic spacetimes with a lightlike Killing vector field
Rossella Bartolo, Anna Maria Candela, José Luis Flores
Given a globally hyperbolic spacetime endowed with a complete lightlike Killing vector field and a complete Cauchy hypersurface, we characterize the points which can be connected b…