Cauchy-Davenport Theorem for linear maps: Simplification and Extension

preprint2016arXivOpen access

Abstract

We give a new proof of the Cauchy-Davenport Theorem for linear maps given by Herdade et al., (2015). This theorem gives a lower bound on the size of the image of a linear map on a grid. Our proof is purely combinatorial and offers a partial insight into the range of parameters not handled previously.

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