Geodesic
Elements of Quasiconvex Subdifferential Calculus
Journal of convex analysis, Tome 7 (2000) no. 2, pp. 243-27 Cet article a éte moissonné depuis la source Heldermann Verlag

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A number of rules for the calculus of subdifferentials of generalized convex functions are displayed. The subdifferentials we use are among the most significant for this class of functions, in particular for quasiconvex functions: we treat the Greenberg-Pierskalla's subdiffential and its relatives and the Plastria's lower subdifferential. We also deal with a recently introduced subdifferential constructed with the help of a generalized derivative. We emphasize the case of the sublevel-convolution, an operation analogous to the infimal convolution, which has proved to be of importance in the field of quasiconvex functions. We provide examples delineating the limits of the rules we provide.
Classification : 26B25, 90C26, 2651, 26A27
Mots-clés : Harmonic sum, incident derivative, lower subdifferential, normal cone, quasiconvex function, subdifferential set, sublevel-convolution 
@article{JCA_2000_7_2_JCA_2000_7_2_a1,
     author = {J.-P. Penot and C. Zalinescu},
     title = {Elements of {Quasiconvex} {Subdifferential} {Calculus}},
     journal = {Journal of convex analysis},
     pages = {243--27},
     year = {2000},
     volume = {7},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2000_7_2_JCA_2000_7_2_a1/}
}
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J.-P. Penot; C. Zalinescu. Elements of Quasiconvex Subdifferential Calculus. Journal of convex analysis, Tome 7 (2000) no. 2, pp. 243-27. http://geodesic.mathdoc.fr/item/JCA_2000_7_2_JCA_2000_7_2_a1/