Cocyclic Development of Designs
Journal of Algebraic Combinatorics: An International Journal
Constructions of partial difference sets and relative difference sets using Galois rings II
Journal of Combinatorial Theory Series A
A unifying construction for difference sets
Journal of Combinatorial Theory Series A
Cocyclic Generalised Hadamard Matrices and Central RelativeDifference Sets
Designs, Codes and Cryptography
Relative difference sets fixed by inversion and Cayley graphs
Journal of Combinatorial Theory Series A
Relative difference sets fixed by inversion (ii): character theoretical approach
Journal of Combinatorial Theory Series A
EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
New cyclic difference sets with Singer parameters
Finite Fields and Their Applications
Sequences and functions derived from projective planes and their difference sets
WAIFI'12 Proceedings of the 4th international conference on Arithmetic of Finite Fields
Partial difference sets and amorphic group schemes from pseudo-quadratic bent functions
Journal of Algebraic Combinatorics: An International Journal
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Additive Hadamard cocycles are a natural generalization of presemifields. In this paper, we study divisible designs and semi-regular relative difference sets obtained from additive Hadamard cocycles. We show that the designs obtained from additive Hadamard cocycles are flag transitive. We introduce a new product construction of Hadamard cocycles. We also study additive Hadamard cocycles whose divisible designs admit a polarity in which all points are absolute. Our main results include generalizations of a theorem of Albert and a theorem of Hiramine from presemifields to additive Hadamard cocycles. At the end, we generalize Maiorana-McFarland@?s construction of bent functions to additive Hadamard cocycles.