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<p>This paper presents a straightforward statement for Khamsi’s theorem without assuming continuity or nondecreasing restrictions on <i>η</i>. Additionally, a new proof provides an affirmative answer to Kirk’s problem, supported by examples. Finally, Ekeland’s variational principle (abbreviated EVP) is developed.</p>

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Concerning Kirk’s problem

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月20日

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  • Hamid Mottaghi Golshan

摘要

This paper presents a straightforward statement for Khamsi’s theorem without assuming continuity or nondecreasing restrictions on η. Additionally, a new proof provides an affirmative answer to Kirk’s problem, supported by examples. Finally, Ekeland’s variational principle (abbreviated EVP) is developed.