Geodesic
Lexicographical Representation of Convex Sets
Journal of convex analysis, Tome 19 (2012) no. 2, pp. 485-496.

Voir la notice de l'article provenant de la source Heldermann Verlag

We introduce two new families of properties on convex sets of Rn, in order to establish new theorems regarding open and closed separation of a convex set from any outside point by linear operators from Rn to Rm, in the sense of the lexicographical order of Rm, for each m = 1, 2, ... , n. We thus obtain lexicographical extensions of well known separation theorems for convex sets as well as characterizations of the solution sets of lexicographical (weak and strict) inequality systems defined by matrices of a given rank.
Classification : 52A20, 90C25
Mots-clés : Convex sets, open lexicographical separation, closed lexicographical separation 
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     author = {J. E. Mart{\'\i}nez-Legaz and J. Vicente-P\'erez},
     title = {Lexicographical {Representation} of {Convex} {Sets}},
     journal = {Journal of convex analysis},
     pages = {485--496},
     publisher = {mathdoc},
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     number = {2},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/JCA_2012_19_2_JCA_2012_19_2_a8/}
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J. E. Martínez-Legaz; J. Vicente-Pérez. Lexicographical Representation of Convex Sets. Journal of convex analysis, Tome 19 (2012) no. 2, pp. 485-496. http://geodesic.mathdoc.fr/item/JCA_2012_19_2_JCA_2012_19_2_a8/