Abstract
Think back to the flat hexagonal plate mentioned earlier. Its twelve rotational symmetries combine in the natural way to form a group. For each positive integer n greater than or equal to three we can manufacture a plate which has n equal sides. In this way we produce a family of symmetry groups which are not commutative, the so-called dihedral groups.
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© 1988 Springer Science+Business Media New York
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Armstrong, M.A. (1988). Dihedral Groups. In: Groups and Symmetry. Undergraduate Texts in Mathematics. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-4034-9_4
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DOI: https://doi.org/10.1007/978-1-4757-4034-9_4
Publisher Name: Springer, New York, NY
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