Several Theorems on Single and Set-Valued Pre?i? Type Mappings

摘要

In this study, we introduce set-valued Pre?i? type almost contractive mapping, Pre?i? type almost F -contractive mapping and set-valued Pre?i? type almost F -contractive mapping in metric space and prove some fixed point results for these mappings. Additionally, we give examples to show that our main theorems are applicable. These examples show that the new class of set-valued Pre?i? type almost F -contractive operators is not included in Pre?i? type class of set-valued Pre?i? type almost contractive operators.