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math.CO2019
Morphisms of Skew Hadamard Matrices
Philip Heikoop, Guillermo Nuñez Ponasso, Padraig Ó Catháin +1
Quaternary unit Hadamard (QUH) matrices were introduced by Fender, Kharagani and Suda along with a method to construct them at prime power orders. We present a novel construction o…
math.CO2019
Dimensions of semi-simple matrix algebras
Phillip Heikoop, Padraig Ó Catháin
For we show that every integer of the form such that is the dimension of a connected semi-simple subalgebra of…