2 papers
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…
cs.IT2017
Improved User-Private Information Retrieval via Finite Geometry
Oliver Gnilke, Marcus Greferath, Camilla Hollanti +3
In a User-Private Information Retrieval (UPIR) scheme, a set of users collaborate to retrieve files from a database without revealing to observers which participant in the scheme r…