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On Brondsted-Rockafellar's Theorem for convex lower semicontinuous epi pointed functions in locally convex spaces
(Springer, 2018)
In this work we give an extension of the Brondsted-Rockafellar Theorem, and some of its important consequences, to proper convex lower-semicontinuous epi-pointed functions defined in locally convex spaces. We use a new ...
Subdifferential of the Supremum via Compactification of the Index Set
(Springer, 2020)
We give new characterizations for the subdifferential of the supremum of an arbitrary family of convex functions, dropping out the standard assumptions of compactness of the index set and upper semi-continuity of the ...
A convex analysis approach for convex multiplicative programming
(SpringerDordrechtHolanda, 2008)
Dual convergence for penalty proximal point algorithms in convex programming
(2007)
We consider an implicit iterative method in convex programming which combines inexact
variants of the proximal point algorithm, with parametric penalty functions. We investigate a
multiplier sequence which is explicitly ...
An outcome space approach for generalized convex multiplicative programs
(SpringerDordrechtHolanda, 2010)
Absolute minimizer in convex programming by exponential penalty.
(2000)
We consider a nonlinear convex program. Under some general hy-potheses, we prove that approximate solutions obtained by exponential penalty converge toward a particular solution of the original convex program as the penalty ...
Statistical Query Algorithms for Mean Vector Estimation and Stochastic Convex Optimization
(INFORMS, 2021)
Stochastic convex optimization, by which the objective is the expectation of a random convex function, is an important and widely used method with numerous applications in machine learning, statistics, operations research, ...
Subdifferential of the supremum function: moving back and forth between continuous and non-continuous settings
(Springer, 2020)
In this paper we establish general formulas for the subdifferential of the pointwise supremum of convex functions, which cover and unify both the compact continuous and the non-compact non-continuous settings. From the ...
On Convex Functions and the Finite Element Method
(Society for Industrial and Applied Mathematics, 2009-12)
Many problems of theoretical and practical interest involve finding a convex or concave function.For instance, optimization problems such as finding the projection on the convex functions in $H^k(Omega)$, or some problems ...
Polyhedral studies on the convex recoloring problem
(ElsevierAmsterdam, 2013-11-05)
A coloring of the vertices of a graph G is convex if, for each assigned color d, the vertices with color d induce a connected subgraph of G. We address the convex recoloring problem, defined as follows. Given a graph G and ...