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- W2169554077 abstract "We find sharp absolute constants C1 and C2 with the following property: every well-rounded lattice of rank 3 in a Euclidean space has a minimal basis so that the solid angle spanned by these basis vectors lies in the interval [C1,C2]. In fact, we show that these absolute bounds hold for a larger class of lattices than just well-rounded, and the upper bound holds for all. We state a technical condition on the lattice that may prevent it from satisfying the absolute lower bound on the solid angle, in which case we derive a lower bound in terms of the ratios of successive minima of the lattice. We use this result to show that among all spherical triangles on the unit sphere in RN with vertices on the minimal vectors of a lattice, the smallest possible area is achieved by a configuration of minimal vectors of the (normalized) face centered cubic lattice in R3. Such spherical configurations come up in connection with the kissing number problem." @default.
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- W2169554077 date "2011-02-01" @default.
- W2169554077 modified "2023-09-30" @default.
- W2169554077 title "Bounds for solid angles of lattices of rank three" @default.
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- W2169554077 doi "https://doi.org/10.1016/j.jcta.2010.06.001" @default.
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