Iskander Aliev: On Diophantine approximations with bounded denominator

This is a joint work with Martin Henk.

We study the problem of best approximations of a vector $ \alpha\in\mathbb{R}^n$ by rational vectors of a lattice $ \Lambda\subset
\mathbb{R}^n$ whose common denominator is bounded. To this end we introduce successive minima for a periodic lattice structure and extend some classical results from geometry of numbers to this structure. This leads to bounds for the best approximation problem which generalize and improve former results.

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