Tressler, Eric Paul2011-08-062011-08-062004-04-20etd-05042004-120929http://hdl.handle.net/10919/9898Hadamard matrices are defined, and their basic properties outlined. A survey of historical and recent literature follows, in which a number of existence theorems are examined and given context. Finally, a new result for Hadamard matrices over $\Z_2$ is presented and given a graph-theoretic interpretation.ETDIn CopyrightHadamarddesign theorycliquecoding theoryBIBDThesishttp://scholar.lib.vt.edu/theses/available/etd-05042004-120929