On the MDS conjecture in even characteristic

Authors: Bocong Chen, Jing Huang

34 pages

Abstract: We prove that every nontrivial linear $[n,k]$ maximum distance separable (MDS) code over a finite field $\F_q$ of characteristic two satisfies $n\le q+1$, except in dimensions $k=3$ and $k=q-1$, where $n\le q+2$. This resolves the linear MDS conjecture in even characteristic.

Submitted to arXiv on 20 Oct. 2026

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