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A Lagrange multiplier theorem and a sandwich theorem for convex relations

Jonathan M. Borwein
- 01 Dec 1981 - 
- Vol. 48, pp 189-204
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TLDR
In this paper, the authors formulate and prove various separation principles for convex relations taking values in an order complete vector space, and these principles subsume the standard ones, and prove that these separation principles are optimal.
Abstract
We formulate and prove various separation principles for convex relations taking values in an order complete vector space. These principles subsume the standard ones.

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Book ChapterDOI

Theory of Vector Optimization

TL;DR: This work derives necessary and sufficient optimality conditions, a minimal point theorem, a vector-valued variational principle of Ekeland’s type, Lagrangean multiplier rules and duality statements, and discusses a general scalarization procedure.
Book

Convex Functions: Constructions, Characterizations and Counterexamples

TL;DR: Convexity is a natural and powerful property of functions that plays a significant role in many areas of mathematics, both pure and applied as mentioned in this paper, and is an important tool in optimization, mathematical programming and game theory.
Journal ArticleDOI

Duality relationships for entropy-like minimization problems

TL;DR: In this article, the minimization of a convex integral functional over the positive cone of an $L_p $ space, subject to a finite number of linear equality constraints, is considered.
Journal ArticleDOI

A Duality Theory for Set-Valued Functions I: Fenchel Conjugation Theory

TL;DR: In this article, it was shown that a proper closed convex function with values in the power set of a preordered, separated locally convex space is the pointwise supremum of its set-valued affine minorants.
Journal ArticleDOI

Partially finite convex programming, part II: explicit lattice models

TL;DR: This work derived a duality theorem for partially finite convex programs, problems for which the standard Slater condition fails almost invariably, and shall apply its results to a number of more concrete problems, including variants of semi-infinite linear programming, L1 approximation, constrained approximation and interpolation, spectral estimation, semi-Infinite transportation problems and the generalized market area problem of Lowe and Hurter (1976).
References
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Book

Functional analysis

Walter Rudin
Book ChapterDOI

Ordered linear spaces

Journal ArticleDOI

Regularity and stability for the mathematical programming problem in Banach spaces

TL;DR: In this paper, a regularity assumption for the mathematical programming problem in Banach spaces is proposed, which is equivalent to the existence of a non-empty and weakly compact set of Lagrange multipliers.
Journal ArticleDOI

Regularity and Stability for Convex Multivalued Functions

TL;DR: Multivalued functions with convex graphs are shown to exhibit certain desirable regularity properties when their ranges have internal points to develop a perturbation theory for convex inequalities and to extend results on the continuity of convex functions.