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991.
Marek Niezgoda 《Journal of Mathematical Analysis and Applications》2011,381(2):935-946
In this paper we extend Schur-Ostrowski theorem on Schur-convex functions from majorized vectors to separable ones. For this, we introduce a generalized Schur-Ostrowski?s condition. We apply the obtained result for cone orderings and group-induced cone orderings. Finally, we give some interpretations for absolutely weak majorization and for group majorization on the space of complex matrices. 相似文献
992.
《Optimization》2012,61(3-4):153-163
993.
《Optimization》2012,61(5):759-773
Using a number theoretic approach a method of reducing the elementary divisors of a local cone is presented. This will be done by generating a finite series of integer local optimization problems. The final problem is equivalent to an unidimensional group knapsack problem. It is an aggregation-type approach where the usual condition of identical solutions is replaced by the demand for equal values of objective functions. 相似文献
994.
Given a real(finite-dimensional or infinite-dimensional) Hilbert space H with a Jordan product,we consider the Lorentz cone linear complementarity problem,denoted by LCP(T,Ω,q),where T is a continuous linear operator on H,ΩH is a Lorentz cone,and q ∈ H.We investigate some conditions for which the problem concerned has a unique solution for all q ∈ H(i.e.,T has the GUS-property).Several sufficient conditions and several necessary conditions are given.In particular,we provide two suficient and necessary cond... 相似文献
995.
We develop a general framework for linear intersection cuts for convex integer programs with full-dimensional feasible regions by studying integer points of their translated tangent cones, generalizing the idea of Balas (1971). For proper (i.e, full-dimensional, closed, convex, pointed) translated cones with fractional vertices, we show that under certain mild conditions all intersection cuts are indeed valid for the integer hull, and a large class of valid inequalities for the integer hull are intersection cuts, computable via polyhedral approximations. We also give necessary conditions for a class of valid inequalities to be tangent halfspaces of the integer hull of proper translated cones. We also show that valid inequalities for non-pointed regular translated cones can be derived as intersection cuts for associated proper translated cones under some mild assumptions. 相似文献
996.
This Note presents an approximation method for convex yield surfaces in the framework of yield design theory. The proposed algorithm constructs an approximation using a convex hull of ellipsoids such that the approximate criterion can be formulated in terms of second-order conic constraints. The algorithm can treat bounded as well as unbounded yield surfaces. Its efficiency is illustrated on two yield surfaces obtained using up-scaling procedures. 相似文献
997.
An extended Tomonaga-Luttinger model including for-ward scattering both from electron-electron and electron-pho-non interaction is solved exactly using bosonization techniques. We calculate correlation functions for the relevant instabilities and give a phase diagram. 相似文献
998.
1000.
《数学季刊》2017,(2):187-193
In this paper, we will construct a new class of subadditive set-valued maps and use Cantor theorem to prove that the set-valued map has an unique additive selection map when the set-valued map satisfies some certain conditions, and then compare the obtained result with the well-known results. 相似文献