About the Authors

Karwan H.F.Jwamer

Mathematics Department, School of Science, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq

Najim Abdullah I.

Mathematics Department, College of Science, University of Garmian, Kalar, Kurdistan Region, Iraq

Corresponding Author

Email: karwan.jwamer@univsul.edu.iq, najimabdallah51@yahoo.com