Abstract
Motivated by a classical result concerning the ε-subdifferential of the sum of two proper, convex and lower semicontinuous functions, we give in this paper a similar result for the enlargement of the sum of two maximal monotone operators defined on a Banach space. This is done by establishing a necessary and sufficient condition for a bivariate inf-convolution formula.
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Borwein, J.M.: Maximal monotonicity via convex analysis. J. Convex Anal. 13(3–4), 561–586 (2006)
Boţ, R.I., Wanka, G.: A weaker regularity condition for subdifferential calculus and Fenchel duality in infinite dimensional spaces. Nonlinear Anal. 64(12), 2787–2804 (2006)
Boţ, R.I., Csetnek, E.R., Wanka, G.: A new condition for maximal monotonicity via representative functions. Nonlinear Anal. 67(8), 2390–2402 (2007)
Boţ, R.I., Grad, S.-M., Wanka, G.: Maximal monotonicity for the precomposition with a linear operator. SIAM J. Optim. 17(4), 1239–1252 (2006)
Boţ, R.I., Grad, S.-M., Wanka, G.: Weaker constraint qualifications in maximal monotonicity. Numer. Funct. Anal. Optim. 28(1–2), 27–41 (2007)
Boţ, R.I., Grad, S.-M., Wanka, G.: Generalized Moreau–Rockafellar results for composed convex functions. Preprint no. 16/2007. Chemnitz University of Technology, Faculty of Mathematics, Chemnitz, Germany (2007)
Boţ, R.I., Hodrea, I.B., Wanka, G.: ε-optimality conditions for composed convex optimization problems. J. Approx. Theory 153(1), 108–121 (2008). doi:10.1016/j.jat.2008.03.002
Brøndsted, A., Rockafellar, R.T.: On the subdifferential of convex functions. Proc. Amer. Math. Soc. 16, 605–611 (1965)
Burachik, R.S., Iusem, A.N., Svaiter, B.F.: Enlargement of monotone operators with applications to variational inequalities. Set-Valued Anal. 5(2), 159–180 (1997)
Burachik, R.S., Jeyakumar, V.: A new geometric condition for Fenchel’s duality in infinite dimensional spaces. Math. Programming 104(2–3), 229–233 (2005)
Burachik, R.S., Jeyakumar, V., Wu, Z.-Y.: Necessary and sufficient conditions for stable conjugate duality. Nonlinear Anal. 64(9), 1998–2006 (2006)
Burachik, R.S., Svaiter, B.F.: ϵ-enlargements of maximal monotone operators in Banach spaces. Set-Valued Anal. 7(2), 117–132 (1999)
Burachik, R.S., Svaiter, B.F.: Maximal monotone operators, convex functions and a special family of enlargements. Set-Valued Anal. 10(4), 297–316 (2002)
Burachik, R.S., Svaiter, B.F.: Operating enlargements of monotone operators: new connections with convex functions. Pacific J. Optim. 2(3), 425–445 (2006)
Ekeland, I., Temam, R.: Convex Analysis and Variational Problems. North-Holland Publishing Company, Amsterdam (1976)
Fitzpatrick, S.: Representing monotone operators by convex functions. In: Workshop/Miniconference on Functional Analysis and Optimization (Canberra, 1988). In: Proceedings of the Centre for Mathematical Analysis, vol. 20, pp. 59–65. Australian National University, Canberra (1988)
García, Y., Lassonde, M., Revalski, J.P.: Extended sums and extended compositions of monotone operators. J. Convex Anal. 13(3–4), 721–738 (2006)
Hiriart-Urruty, J.-B.: ε-subdifferential calculus. In: Aubin, J.-P., Vinter, R.B. (eds.) Convex Analysis and Optimization. Research Notes in Mathematics, vol. 57, pp. 43–92. Pitman, Boston (1982)
Marquez Alves, M., Svaiter, B.F.: Brønsted–Rockafellar property and maximality of monotone operators representable by convex functions in non-reflexive Banach spaces. J. Convex Anal. 15(4), (2008)
Martínez-Legaz, J.E., Svaiter, B.F.: Monotone operators representable by l.s.c convex functions. Set-Valued Anal. 13(1), 21–46 (2005)
Martínez-Legaz, J.E., Théra, M.: ε-subdifferentials in terms of subdifferentials. Set-Valued Anal. 4(4), 327–332 (1996)
Penot, J.P., Zălinescu, C.: Bounded convergence for perturbed minimization problems. Optimization 53(5–6), 625–640 (2004)
Penot, J.P., Zălinescu, C.: Some problems about the representation of monotone operators by convex functions. ANZIAM Journal J. Aust. N.Z. Ind. Appl. Math. 47(1), 1–20 (2005)
Pomerol, J.-Ch.: Contribution à la programmation mathématique: existence des multiplicateurs de Lagrange et stabilité. Thesis. P. and M. Curie, University, Paris (1980)
Ponstein, J.: Approaches to the theory of optimization. In: Cambridge Tracts in Mathematics, vol. 77. Cambridge University Press, Cambridge (1980)
Precupanu, T.: Closedness conditions for the optimality of a family of non-convex optimization problem. Math. Oper.forsch. Stat., Ser. Optim. 15(3), 339–346 (1984)
Revalski, J.P., Théra, M.: Enlargements and sums of monotone operators. Nonlinear Anal. 48(4), 505–519 (2002)
Rockafellar, R.T.: On the maximal monotonicity of subdiferential mappings. Pacific J. Math 33(1), 209–216 (1970)
Simons, S.: From Hahn-Banach to Monotonicity. Springer Verlag, Berlin (2008)
Simons, S., Zălinescu, C.: Fenchel duality, Fitzpatrick functions and maximal monotonicity. J. Nonlinear Convex Anal. 6(1), 1–22 (2005)
Svaiter, B.F.: A family of enlargements of maximal monotone operators. Set-Valued Anal. 8(4), 311–328 (2000)
Zălinescu, C.: Convex Analysis in General Vector Spaces. World Scientific, Singapore (2002)
Zălinescu, C.: Slice convergence for some classes of convex functions. J. Nonlinear Convex Anal. 4(2), 185–214 (2003)
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R. I. Boţ’s research partially supported by DFG (German Research Foundation), project WA 922/1.
E. R. Csetnek’s research supported by a Graduate Fellowship of the Free State Saxony, Germany.
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Boţ, R.I., Csetnek, E.R. An Application of the Bivariate Inf-Convolution Formula to Enlargements of Monotone Operators. Set-Valued Anal 16, 983–997 (2008). https://doi.org/10.1007/s11228-008-0093-9
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DOI: https://doi.org/10.1007/s11228-008-0093-9