Let $K$ be a number field, then its ring of integers $\mathcal{O}_K$ in the Minkowski space of $K$ is a lattice $\Lambda$. Is there some geometric descrpition/intuition that describes sublattices of $\Lambda$ of full rank that are ideals of $\mathcal{O}_K$?
2026-03-26 01:10:57.1774487457
Which lattices are ideals of a number field?
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