Abstract
We prove that the notion of Tykhonov well-posed problems is stable under the operation of inf-convolution. We deal with lower semicontinuous functions (not necessarily convex) defined on a metric magma. Several applications are given, in particular to the study of the map \(\arg \min \).
Similar content being viewed by others
References
McShane, E.: Extension of range of functions. Bull. Am. Math. Soc. 40(12), 837–842 (1934)
Moreau, J.J: Fonctionnelles convexes. Séminaire Jean Leray 2, 1–108 (1966–1967)
Moreau, J.J.: Proximité et dualité dans un espace hilbertien. Bull. Soc. Math. Fr. 93, 273–299 (1965)
Rockafellar, R.T.: Convex Analysis. Princeton University Press, Princeton (1997)
Strömberg, T.: The operation of infimal convolution. Diss. Math. 352, 1–58 (1996)
Azagra, D., Ferrera, J.: Regularization by sup-inf convolutions on Riemannian manifolds: an extension of Lasry–Lions theorem to manifolds of bounded curvature. J. Math. Anal. Appl. 423(2), 994–1024 (2015)
Hiriart-Urruty, J.-B., Lemarechal, C.: Fundamentals of Convex Analysis. Grundlehren Text Editions. Springer, Berlin (2001)
Zagrodny, D.: The cancellation law for inf-convolution of convex functions. Studia Math. 110(3), 271–282 (1994)
Bachir, M.: A Banach–Stone type theorem for invariant metric groups. Topol. Appl. 209, 189–197 (2016)
Bachir, M.: Representation of isometric isomorphisms between monoids of Lipschitz functions. Methods Funct. Anal. Topol. 23(4), 309–319 (2017)
Bachir, M.: The inf-convolution as a law of monoid. An analogue to the Banach–Stone theorem. J. Math. Anal. Appl. 420(1), 145–166 (2014)
Deville, R., Godefroy, G., Zizler, V.: A smooth variational principle with applications to Hamilton–Jacobi equations in infinite dimensions. J. Funct. Anal. 111, 197–212 (1993)
Deville, R., Godefroy, G., Zizler, V.: Smoothness and renormings in Banach spaces. In: Pitman Monographs No. 64. Longman, London (1993)
Deville, D., Revalski, J.P.: Porosity of ill-posed problems. Proc. Am. Math. Soc. 128, 1117–1124 (2000)
Klee, V.L.: Invariant metrics in groups (solution of a problem of Banach). Proc. Am. Math. Soc. 3, 484–487 (1952)
Phelps, R.R.: Convex Functions, Monotone Operators and Differentiability. Lecture Notes in Mathematics, vol. 1364. Springer, Berlin (1993)
Finet, C., Quarta, L., Troestler, C.: Vector-valued variational principles. Nonlinear Anal. 52, 197–218 (2003)
Hiriart-Urruty, J.-B., Mazure, M.L.: Formulation variationnelles de l’addition parallles d’oprateurs semi-definies positifs. CR Acad. Sci. Paris Ser. I Math. 302, 527–530 (1986)
Mazure, M.L.: Equations de convolution et formes quadratiques. Ann. Mat. Pura Appl. 158, 75–97 (1991)
Acknowledgements
The author would like to thank the anonymous referees for their helpful comments involving the following version of the article.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by Julian P. Revalski.
Rights and permissions
About this article
Cite this article
Bachir, M. Well Posedness and Inf-Convolution. J Optim Theory Appl 177, 271–290 (2018). https://doi.org/10.1007/s10957-018-1286-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10957-018-1286-5