Well-Posedness of Approximation and Optimization Problems for Weakly Convex Sets and Functions

Verfasser / Beitragende:
[G. Ivanov, M. Lopushanski]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Mathematical Sciences, 209/1(2015-08-01), 66-87
Format:
Artikel (online)
ID: 605525714
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024 7 0 |a 10.1007/s10958-015-2485-3  |2 doi 
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245 0 0 |a Well-Posedness of Approximation and Optimization Problems for Weakly Convex Sets and Functions  |h [Elektronische Daten]  |c [G. Ivanov, M. Lopushanski] 
520 3 |a We consider the class of weakly convex sets with respect to a quasiball in a Banach space. This class generalizes the classes of sets with positive reach, proximal smooth sets and prox-regular sets. We prove the well-posedness of the closest points problem of two sets, one of which is weakly convex with respect to a quasiball M, and the other one is a summand of the quasiball −rM, where r ∈ (0, 1). We show that if a quasiball B is a summand of a quasiball M, then a set that is weakly convex with respect to the quasiball M is also weakly convex with respect to the quasiball B. We consider the class of weakly convex functions with respect to a given convex continuous function γ that consists of functions whose epigraphs are weakly convex sets with respect to the epigraph of γ. We obtain a sufficient condition for the well-posedness of the infimal convolution problem, and also a sufficient condition for the existence, uniqueness, and continuous dependence on parameters of the minimizer. 
540 |a Springer Science+Business Media New York, 2015 
700 1 |a Ivanov  |D G.  |u Moscow Institute of Physics and Technology (State University), Moscow, Russia  |4 aut 
700 1 |a Lopushanski  |D M.  |u Moscow Institute of Physics and Technology (State University), Moscow, Russia  |4 aut 
773 0 |t Journal of Mathematical Sciences  |d Springer US; http://www.springer-ny.com  |g 209/1(2015-08-01), 66-87  |x 1072-3374  |q 209:1<66  |1 2015  |2 209  |o 10958 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ivanov  |D G.  |u Moscow Institute of Physics and Technology (State University), Moscow, Russia  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lopushanski  |D M.  |u Moscow Institute of Physics and Technology (State University), Moscow, Russia  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Mathematical Sciences  |d Springer US; http://www.springer-ny.com  |g 209/1(2015-08-01), 66-87  |x 1072-3374  |q 209:1<66  |1 2015  |2 209  |o 10958