A scientific study in the Faculty of Science, Department of Mathematics, prepared by the instructor, Prof. Shuker M.Kh., and the researcher, Muatiz S. Sh., entitled (Some Applications in Decision-Making Using Cosine Maps and the Relevance of the Pythagorean Fuzzy) It was published in the Journal of Engineering Applications of Artificial Intelligence, which is magazine with an impact factor of 7.7 and Scopas with a site score of 11,  and is issued by Elsevier Publishing House.