On covering radii in function fields
摘要
In this paper, we shall discuss topics in geometry of numbers in the function field setting, such as covering radii. We find a closed form for covering radii with respect to convex bodies, which will lead to a proof of the function field analogue of Woods’ conjecture in this setting. Then, we will prove a function field analogue of Minkowski’s conjecture about the multiplicative covering radius. To do this, we shall prove a function field analogue of Solan’s result that every diagonal orbit intersects the set of well rounded lattices. This implies that the Gruber–Mordell spectrum in function field is trivial in every dimension.