Abstract
Let F be a ternary non-weakly regular bent function in GMMF class whose dual \(F^*\) is bent. We prove that if F satisfies certain conditions, then collecting the pre-image sets of the dual function \(F^{*}\) with respect to the subsets \(B_+(F)\) and \(B_-(F)\) forms an imprimitive symmetric translation scheme of class 5 (resp. 6) if the dimension is odd (resp. even). Hence, we construct two infinite families of imprimitive symmetric association schemes. Moreover, fusing the first or last three non-trivial relations, we obtain association schemes of classes 3 and 4, respectively.
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Özbudak, F., Pelen, R.M. Imprimitive symmetric association schemes of classes 5 and 6 arising from ternary non-weakly regular bent functions. J Algebr Comb 56, 635–658 (2022). https://doi.org/10.1007/s10801-022-01126-1
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DOI: https://doi.org/10.1007/s10801-022-01126-1