H. Shuker N, نزار, Hammodat A, علاء. On Idempotent Elements. RJCSM [Internet]. 2025 Jun. 25 [cited 2025 Sep. 10];6(3):49-56. Available from: https://edusj.uomosul.edu.iq/index.php/csmj/article/view/36457