Mohammed Hassen Elzubair2018-10-102018-10-102006http://hdl.handle.net/123456789/13148Athesis Submitted in Fulfillment of The Requirements for Degree of Ph.D in MathematicsAbstract In this research we utilized twister theory to describe the geometry of space-time. The twistors are derived from Spinors which are also used to write zero rest- mass fields equations. We mainly used the properties of twistor filnction to generate zero rest- mass fields, where this function is formulated from both the geometry and topology of Minkowski spaceengeometry of spaceThesis