<p>In this paper, we consider a roughly convex multiobjective optimization problem and use the concept of the outer <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\gamma \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>γ</mi> </math></EquationSource> </InlineEquation>-convexity (resp., the <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\gamma \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>γ</mi> </math></EquationSource> </InlineEquation>-convexlikeness) of the objective mapping, where <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\gamma &gt;0\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>γ</mi> <mo>&gt;</mo> <mn>0</mn> </mrow> </math></EquationSource> </InlineEquation> is the roughness degree of the objective one, to show that every <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(\gamma \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>γ</mi> </math></EquationSource> </InlineEquation>-local weak efficient solution (resp., <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\gamma \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>γ</mi> </math></EquationSource> </InlineEquation>-local efficient solution) of the considered problem is also a global weak efficient one (resp., global efficient one). Necessary and sufficient conditions for efficiency solutions are established by using <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(\gamma \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>γ</mi> </math></EquationSource> </InlineEquation>-subdifferentials. Examples are also given to illustrate the obtained results.</p>

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On Roughly Convex Multiobjective Optimization

  • Tran Van Nghi,
  • Nguyen Van Tuyen

摘要

In this paper, we consider a roughly convex multiobjective optimization problem and use the concept of the outer \(\gamma \) γ -convexity (resp., the \(\gamma \) γ -convexlikeness) of the objective mapping, where \(\gamma >0\) γ > 0 is the roughness degree of the objective one, to show that every \(\gamma \) γ -local weak efficient solution (resp., \(\gamma \) γ -local efficient solution) of the considered problem is also a global weak efficient one (resp., global efficient one). Necessary and sufficient conditions for efficiency solutions are established by using \(\gamma \) γ -subdifferentials. Examples are also given to illustrate the obtained results.