Abstract
For a difference balanced function \(f\) from \({\mathbb F}_{q^n}^*\) to \({\mathbb F}_q\), the set \(D := \{ (x, f(x)) : x \in {\mathbb F}_{q^n}^* \}\) is a generalized difference set with respect to two exceptional subgroups \(({\mathbb F}_{q^n}^*, \cdot )\) and \(({\mathbb F}_q, +)\). This allows us to prove the balance property of difference balanced functions from \({\mathbb F}_{q^n}^*\) to \({\mathbb F}_q\) where \(q\) is a prime power. We further prove two necessary and sufficient conditions for \(d\)-homogeneous difference balanced functions. This unifies several combinatorial objects related to difference balanced functions.
The work was partially done when the second author was working at Institute of Algebra and Geometry, Otto-von-Guericke University Magdeburg, Magdeburg, Germany, supported by the Alexander von Humboldt Foundation.
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Pott, A., Wang, Q. (2015). Some Results on Difference Balanced Functions. In: Koç, Ç., Mesnager, S., Savaş, E. (eds) Arithmetic of Finite Fields. WAIFI 2014. Lecture Notes in Computer Science(), vol 9061. Springer, Cham. https://doi.org/10.1007/978-3-319-16277-5_6
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DOI: https://doi.org/10.1007/978-3-319-16277-5_6
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