Abstract
We study the integration of fuzzy level sets associated with a fuzzy random variable when the underlying space is a separable Banach space or a weak star dual of a separable Banach space. In particular, the expectation and the conditional expectation of fuzzy level sets in this setting are presented. We prove the SLLN for pairwise independent identically distributed fuzzy convex compact valued level sets through the SLLN for pairwise independent identically distributed convex compact valued random set in separable Banach space. Some convergence results for a class of integrand martingale are also presented.
JEL Classification: C01, C02.
Mathematics Subject Classification (2010): 28B20, 60G42, 46A17, 54A20.
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References
Artstein Z, Hansen JC (1985) Convexification in limit laws of random sets in Banach spaces. Ann Probab 13(1):307–309
Castaing C (1970) Quelques résultats de compacité liés à l’intégration. C R Acad Sci Paris Sér A-B 270:A1732–A1735. Actes du Colloque d’Analyse Fonctionnelle de Bordeaux (Univ. Bordeaux, 1971), pp 73–81. Bull. Soc. Math. France, Mém. No. 31–32. Soc. Math. France, Paris (1972)
Castaing C (2011) Some various convergence results for normal integrands. In: Kusuoka S, Maruyama T (eds) Advances in mathematical economics, vol 15. Springer, Tokyo, pp 1–26
Castaing C, Ezzaki F, Lavie M, Saadoune M (2011) Weak star convergence of martingales in a dual space. In: Hudzik H, Lewicki G, Musielak J, Nowak M, Skrzypczak L (eds) Function spaces IX. Banach center publications, vol 92. Polish Academy of Sciences, Institute of Mathematics, Warsaw, pp 45–73
Castaing C, Hess C, Saadoune M (2008) Tightness conditions and integrability of the sequential weak upper limit of a sequence of multifunctions. In: Kusuoka S, Yamazaki A (eds) Advances in mathematical economics, vol 11. Springer, Tokyo, pp 11–44
Castaing C, Raynaud de Fitte P (2013) Law of large numbers and ergodic theorem for convex weak star compact valued Gelfand-integrable mappings. In: Kusuoka S, Maruyama T (eds) Advances in mathematical economics, vol 17. Springer, Tokyo, pp 1–37
Castaing C, Raynaud de Fitte P, Valadier M (2004) Young measures on topological spaces. With applications in control theory and probability theory. Mathematics and its applications, vol 571. Kluwer Academic, Dordrecht
Castaing C, Valadier M (1977) Convex analysis and measurable multifunctions. Lecture notes in mathematics, vol 580. Springer, Berlin/New York
de Blasi FS, Tomassini L (2011) On the strong law of large numbers in spaces of compact sets. J Convex Anal 18(1):285–300
Feron R (1976) Ensembles aléatoires flous. C R Acad Sci Paris Sér A-B 282(16):Aiii, A903–A906
Fitzpatrick S, Lewis AS (2006) Weak-star convergence of convex sets. J Convex Anal 13(3–4):711–719
Hiai F (1984) Strong laws of large numbers for multivalued random variables. In: Multifunctions and integrands (Catania, 1983). Lecture notes in mathematics, vol 1091. Springer, Berlin, pp 160–172
Hiai F, Umegaki H (1977) Integrals, conditional expectations, and martingales of multivalued functions. J Multivar Anal 7(1):149–182
Höhle U, Šostak AP (1999) Axiomatic foundations of fixed-basis fuzzy topology. In: Höhle U, Rodabaugh SE (eds) Mathematics of fuzzy sets. Handbooks of fuzzy sets series, vol 3. Kluwer Academic, Boston, pp 123–272
Inoue H (1991) A strong law of large numbers for fuzzy random sets. Fuzzy Sets Syst 41(3):285–291
Jalby V (1992) Semi-continuité, convergence et approximation des applications vectorielles. loi des grands nombres. Technical report, Université Montpellier II, Laboratoire Analyse Convexe, 34095 Montpellier Cedex 05, France
Joo SY, Kim YK, Kwon JS (2006) Strong convergence for weighted sums of fuzzy random sets. Inf Sci 176(8):1086–1099
Kruse R (1982) The strong law of large numbers for fuzzy random variables. Inf Sci 28(3):233–241
Kwakernaak H (1978) Fuzzy random variables. I. Definitions and theorems. Inform Sci 15(1):1–29
Kwakernaak H (1979) Fuzzy random variables. II. Algorithms and examples for the discrete case. Inform Sci 17(3):253–278
Li S, Ogura Y (1996) Fuzzy random variables, conditional expectations and fuzzy valued martingales. J Fuzzy Math 4(4):905–927
Li S, Ogura Y (2006) Strong laws of large numbers for independent fuzzy set-valued random variables. Fuzzy Sets Syst 157(19):2569–2578
Molchanov IS (1999) On strong laws of large numbers for random upper semicontinuous functions. J Math Anal Appl 235(1):349–355
Neveu J (1972) Martingales à temps discret. Masson et Cie, éditeurs, Paris
Puri ML, Ralescu DA (1986) Fuzzy random variables. J Math Anal Appl 114(2):409–422
Puri ML, Ralescu DA (1991) Convergence theorem for fuzzy martingales. J Math Anal Appl 160(1):107–122
Stojaković M (1994) Fuzzy random variables, expectation, and martingales. J Math Anal Appl 184(3):594–606
Valadier M (1975) Convex integrands on Souslin locally convex spaces. Pac J Math 59(1):267–276
Valadier M (1980) On conditional expectation of random sets. Ann Mat Pura Appl (4) 126:81–91
Zadeh LA (1965) Fuzzy sets. Inf Control 8:338–353
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Castaing, C., Godet-Thobie, C., Hoang, T.D., de Fitte, P.R. (2015). On the Integration of Fuzzy Level Sets. In: Kusuoka, S., Maruyama, T. (eds) Advances in Mathematical Economics Volume 19. Advances in Mathematical Economics, vol 19. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55489-9_1
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DOI: https://doi.org/10.1007/978-4-431-55489-9_1
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