Güğümcü, NeslihanLambropoulou, Sofia2021-11-062021-11-0620210021-21721565-8511https://doi.org/10.1007/s11856-021-2155-8https://hdl.handle.net/11147/11445Braidoids generalize the classical braids and form a counterpart theory to the theory of planar knotoids, just as the theory of braids does for the theory of knots. In this paper, we introduce basic notions of braidoids, a closure operation for braidoids, we prove an analogue of the Alexander theorem, that is, an algorithm that turns a knotoid into a braidoid, and we formulate and prove a geometric analogue of the Markov theorem for braidoids using the L-moves.eninfo:eu-repo/semantics/openAccessBraidoidsArticle2-s2.0-8510641161110.1007/s11856-021-2155-8