<p>This work introduces a new condition on bifunctions for equilibrium problems, termed the uniform-type condition, which is weaker than the Lipschitz-type conditions. Based on this new framework, we analyze the convergence of the subgradient extragradient method with nonmonotone step sizes for solving equilibrium problems involving pseudomonotone operators in real Hilbert spaces. Notably, the proposed analytical approach is novel. Numerical experiments, including applications of the proposed algorithm to the Nash-Cournot equilibrium model and a traffic network equilibrium problem, further confirm its efficiency and broad applicability.</p>

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New conditions and convergence analysis for equilibrium problems

  • Meiying Wang,
  • Hongwei Liu,
  • Weifeng Gao

摘要

This work introduces a new condition on bifunctions for equilibrium problems, termed the uniform-type condition, which is weaker than the Lipschitz-type conditions. Based on this new framework, we analyze the convergence of the subgradient extragradient method with nonmonotone step sizes for solving equilibrium problems involving pseudomonotone operators in real Hilbert spaces. Notably, the proposed analytical approach is novel. Numerical experiments, including applications of the proposed algorithm to the Nash-Cournot equilibrium model and a traffic network equilibrium problem, further confirm its efficiency and broad applicability.