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Bound sets for floquet boundary value problems: The nonsmooth case
We give a definition of bound set for a very general boundary value problem
that generalizes those already known in literature.
We then find sufficient conditions for
the intersection of the sublevelsets of a family of scalar functions to be a bound set for the
Floquet boundary value problem. Indeed, we distinguish the
two cases of locally Lipschitz
continuous and only continuous scalar functions.