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  • 1 Sichuan University Department of Mathematics Chengdu, Sichuan 610064 China Chengdu, Sichuan 610064 China
  • | 2 Gyeongsang National University The Research Institute of Natural Sciences, Department of Mathematics, College of Education Chinju 660-701 Korea Chinju 660-701 Korea
  • | 3 Yunnan Normal University Department of Mathematics Kunming 650092 China Kunming 650092 China
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The purpose of this paper is to study necessary and sufficient conditions for the Ishikawa iterative sequence with mixed errors of asymptotically quasi-nonexpansive type mappings in Banach spaces to converge to a fixed point in Banach spaces. The results presented in this paper complememt, improve and prefect the corresponding results of [1]–[4] and [7]–[9].