IDEAL GRAPHS A Dissertation Submitted to the Graduate Faculty of the North Dakota State University of Agriculture and Applied Science By Saba Zakariya Al-Kaseasbeh In Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY Major Department: Mathematics August 2014 Fargo, North Dakota brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by NDSU Libraries Institutional Repository