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摘要
In this paper, we answer two open questions posed by Mihet [Fuzzy psi-contractive mappings in non-Archimedean fuzzy metric spaces, Fuzzy Sets Syst. 159 (2008) 739-744] and Gregori et al. [Some questions in fuzzy metric spaces, Fuzzy Sets Syst. 204 (2012) 71-85]. We give a positive answer for the question of Mihet by means of Theorem 1 and a negative answer for the question of Gregori etal. by means of Example 1.
- 出版日期2013-7-1
- 单位华北电力大学（保定）; 华北电力大学
