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Syst."],"published-print":{"date-parts":[[2022,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>With the generalization of the concept of set, more comprehensive structures could be constructed in topological spaces. In this way, it is easier to express many relationships on existing mathematical models in a more comprehensive way. In this paper, the topological structure of virtual fuzzy parametrized fuzzy soft sets is analyzed by considering the virtual fuzzy parametrized fuzzy soft set theory, which is a hybrid set model that offers very practical approaches in expressing the membership degrees of decision makers, which has been introduced to the literature in recent years. Thus, it is aimed to contribute to the development of virtual fuzzy parametrized fuzzy soft set theory. To construct a topological structure on virtual fuzzy parametrized fuzzy soft sets, the concepts of point, quasi-coincident and mapping are first defined for this set theory and some of its characteristic properties are investigated. Then, virtual fuzzy parametrized fuzzy soft topological spaces are defined and concepts such as open, closed, closure, Q-neighborhood, interior, base, continuous, cover and compact are given. In addition, some related properties of these concepts are analyzed. Finally, many examples are given to make the paper easier to understand.<\/jats:p>","DOI":"10.1007\/s40747-021-00378-x","type":"journal-article","created":{"date-parts":[[2021,4,30]],"date-time":"2021-04-30T08:02:54Z","timestamp":1619769774000},"page":"337-348","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["On topological structures of virtual fuzzy parametrized fuzzy soft sets"],"prefix":"10.1007","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3875-1398","authenticated-orcid":false,"given":"Orhan","family":"Dalk\u0131l\u0131\u00e7","sequence":"first","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,4,30]]},"reference":[{"issue":"2","key":"378_CR1","doi-asserted-by":"publisher","first-page":"265","DOI":"10.3390\/sym12020265","volume":"12","author":"S Al Ghour","year":"2020","unstructured":"Al Ghour S, Hamed W (2020) On two classes of soft sets in soft topological spaces. 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