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Elementary fuzzy calculus. (English) Zbl 0626.26014
An extension of the Hausdorff distance is used in definitions of limit properties of fuzzy valued functions. In particular, the derivative and the definite integral of such functions are obtained with properties modelled on real analysis. The paper explains some assumptions introduced by D. Dubois and H. Prade in their consideration of fuzzy differential calculus (cf. [Fuzzy sets and systems. Theory and applications. New York etc.: Academic Press (1980; Zbl 0444.94049), pp. 106–119].
Reviewer: J.Drewniak

##### MSC:
 2.6e+51 Fuzzy real analysis 3e+72 Theory of fuzzy sets, etc.
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##### References:
 [1] Dubois, D., Modêles mathématiques de l’imprécis et de l’incertain en vue d’applications aux techniques d’aide à la décision, () · Zbl 0546.94036 [2] Dubois, D.; Prade, H., Operations on fuzzy numbers, Internat. J. of systems sci., 9, 613-626, (1978) · Zbl 0383.94045 [3] Dubois, D.; Prade, H., Towards fuzzy differential calculus, part 3: differentiation, Fuzzy sets and systems, 8, 225-235, (1982) [4] Goetschel, R.; Voxman, W., Topological properties of fuzzy numbers, Fuzzy sets and systems, 9, 87-99, (1983) · Zbl 0521.54001 [5] Goetschel, R.; Voxman, W., Eigen fuzzy number sets, Fuzzy sets and systems, 16, 75-85, (1985) · Zbl 0581.04007 [6] Rizzi, M., Sélection et classement d’actions en avenir incertain, Document du LAMSADE no. 14, (1981)
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