Önder M.Ekinci Z.2024-07-222024-07-22201701704214http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/15460In this study, by using the concepts and results on spherical curves in dual Lorentzian space, we give the criterions for ruled surfaces with non-lightlike ruling to be closed (periodic). Moreover, we obtain the necessary and sufficient conditions to guarantee that a timelike or a spacelike ruled surface is closed (periodic). Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.EnglishEngineeringMathematical techniquesDual Lorentzian spaceGeodesic curvaturesRuled surfacesTopologyArticle10.1002/mma.4011