en تحقیق در عملیات Operations Research پژوهشي Research <p>In the current study, a dual-channel supply chain is considered containing one manufacturer and two retailers. It is assumed that the manufacturer and retailers have the same decision powers. A game-theoretic approach is developed to analyze pricing decisions under the centralized and decentralized scenarios. First, the Nash model is established to obtain the equilibrium decisions in the decentralized case. Then, the centralized model is developed to maximize the total profit of the whole system. Finally, the equilibrium decisions are discussed and some managerial insights are revealed.&nbsp;</p> E-commerce, Supply chain management, Dual-channel structure, Game theory, Nash equilibrium, Centralized model. 1 8 http://ijiepr.iust.ac.ir/browse.php?a_code=A-10-844-4&slc_lang=en&sid=1 Morteza Rasti-Barzoki 180031947532846004158 180031947532846004158 No Department of Industrial and Systems Engineering, Isfahan University of Technology Hamed Jafari 180031947532846004159 180031947532846004159 Yes Department of Industrial and Systems Engineering, Isfahan University of Technology Seyed Reza Hejazi 180031947532846004160 180031947532846004160 No Department of Industrial and Systems Engineering, Isfahan University of Technology