Fujita T. PolyTree-Soft Sets and PolyForest-Soft Sets: A Directed Acyclic Framework for Soft Set Modeling. HyperSoft Set Meth. Eng. [Internet]. 2025 Aug. 19 [cited 2026 Oct. 25];4:11-23. Available from: https://ojs.sciencesforce.com/index.php/hsse/article/view/577