Binary Caps and LCD Codes with Large Dimensions
Information Theory
2026-04-07 v1 Combinatorics
math.IT
Abstract
We establish a connection between linear complementary dual (LCD) codes and caps in projective space. Using this framework and the structure theory of maximal caps, we derive nonexistence theorems for LCD codes with minimum distance at least , providing computation-free proofs that were previously obtained only through exhaustive search. As an application, we completely determine the optimal minimum distances for codimensions and for the first time.
Cite
@article{arxiv.2604.03734,
title = {Binary Caps and LCD Codes with Large Dimensions},
author = {Keita Ishizuka and Yuhi Kamio},
journal= {arXiv preprint arXiv:2604.03734},
year = {2026}
}