Lalu Riski Wirendra Putra
(1), Jimboy R. Albaracin
(2), I Gede Adhitya Wisnu Wardhana
(3)
(1)
Department of Mathematics, University of Mataram, Indonesia,
(2)
Mathematics Program, College of Science, University of The Philippines Cebu, Philippines,
(3)
Department of Mathematics, University of Mataram, Indonesia
