Abstract
The aim of this chapter is to study the extremal property of lattices of one of the following two types:
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1.
G-lattices, which are invariant under a given finite subgroup G of the orthogonal group O(E).
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2.
(σ-isodual lattices, which are transformed into their dual by a given element σ of finite order in O(E).
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© 2003 Springer-Verlag Berlin Heidelberg
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Martinet, J. (2003). Group Actions. In: Perfect Lattices in Euclidean Spaces. Grundlehren der mathematischen Wissenschaften, vol 327. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-05167-2_11
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DOI: https://doi.org/10.1007/978-3-662-05167-2_11
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-07921-4
Online ISBN: 978-3-662-05167-2
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