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Continuity of set-valued maps revisited in the light of tame geometry
Daniilidis, Aris; Jeffrey Pang, C.H.
Centre de Recerca Matemàtica
Continuity of set-valued maps is hereby revisited: after recalling some basic concepts of variational analysis and a short description of the State-of-the-Art, we obtain as by-product two Sard type results concerning local minima of scalar and vector valued functions. Our main result though, is inscribed in the framework of tame geometry, stating that a closed-valued semialgebraic set-valued map is almost everywhere continuous (in both topological and measure-theoretic sense). The result –depending on stratification techniques– holds true in a more general setting of o-minimal (or tame) set-valued maps. Some applications are briefly discussed at the end.
512 - Àlgebra
Continuïtat (Matemàtica)
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