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Browsing by Author "Flannery, D. L."
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Article
Almost supplementary difference sets and quaternary sequences with optimal autocorrelation
Armario Sampalo, José Andrés; Flannery, D. L. (Springer, 2020)We introduce almost supplementary difference sets (ASDS). For odd m, certain ASDS in Zm that have amicable incidence ...
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Article
Generalized binary arrays from quasi-orthogonal cocycles
Armario Sampalo, José Andrés; Flannery, D. L. (Springer, 2019)Generalized perfect binary arrays (GPBAs) were used by Jedwab to construct perfect binary arrays. A non-trivial GPBA can ...
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Article
On quasi-orthogonal cocycles
Armario Sampalo, José Andrés; Flannery, D. L. (Wiley, 2017)We introduce the notion of quasi-orthogonal cocycle. This is motivated in part by the maximal determinant problem for ...
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Article
Quasi-orthogonal cocycles, optimal sequences and a conjecture of Littlewood
Armario Sampalo, José Andrés; Flannery, D. L. (Springer, 2020)A quasi-orthogonal cocycle, defined over a group of order congruent to 2 modulo 4, is naturally analogous to an orthogonal ...