this monograph is aiming at researchers of systems control, especially those interested in multiagent systems, distributed and decentralized control, and structured systems. the book assumes no prior background in geometric control theory however, a firstyear graduate course in linear control systems is desirable. since not all control researchers today are exposed to geometric control theory, the book also adopts a tutorial style by way of examples that illustrate the geometric and abstract algebra concepts used in linear geometric control. in addition, the matrix calculations required for the studied control synthesis problems of linear multivariable control are illustrated via a set of running design examples. as such, some of the design examples are of higher dimension than one may typically see in a text this is so that all the geometric features of the design problem are illuminated.