On the norm of a dc function |
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Authors: | Rafael Blanquero Emilio Carrizosa |
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Affiliation: | 1.Facultad de Matemáticas,Universidad de Sevilla,Seville,Spain |
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Abstract: | It is well known that, if a vector-valued function can be written as difference of componentwise convex functions, the norm of such function inherits this property. In this note we show that, if the norm in use is monotonic in the positive orthant and the functions are non-negative, a sharper decomposition can be obtained. |
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