This paper deals with an infinite-dimensional optimization approach to the strong separation of two bounded sets in a normed space. We present an approximation procedure, called Algorithm (A), such that a semi-infinite optimization problem must be solved at each step. Its global convergence is established under certain natural assumptions, and a stopping criterion is also provided. The particular case of strong separation in the space Lp(X,A,μ)L_{p} (\mathbb{X}, \mathcal{A}, \mu ) is approached in detail. We also propose Algorithm (B), which is an implementable modification of Algorithm (A) for separating two bounded sets in Lp([a,b])L_{p}([a,b]), with [a,b][a,b] being an interval in R\mathbb{R}. Some illustative computational experience is reported, and a particular stopping criterion is provided for the case of functions of bounded variation in L2([a,b])L_{2}([a,b]).

Contact details are reproduced from the original publication and may be historical.

Marco A. López

Dept. of Statistics and Operations Research, Alicante University, Ap. de Correos 99, 03080 Alicante, Spain

marco.antonio@ua.es

Soon-Yi Wu

National Cheng Kung University, Tainan, Taiwan

Chen Ling

Zhejiang University of Finance and Economics, Hangzhou, P. R. China

Liqun Qi

Polytechnic University of Hong Kong, Hong Kong, P. R. China

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M. A. López, S.-Y. Wu, C. Ling, L. Qi. “A Mathematical Programming Approach to Strong Separation in Normed Spaces.” Journal of Convex Analysis 17 (2010), No. 1, 211–227. https://doi.org/10.68381/jca17016