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Summary
DescriptionInfinite dihedral group.svg
English: The affine symmetric group of type A_1 acts on the line V in the Euclidean plane. The reflections are through the dashed lines, including the two Coxeter generators s_1 and s_0. The vectors of the associated root lattice in V are marked
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Captions
The affine symmetric group of type A_1 acts on the line V in the Euclidean plane. The reflections are through the dashed lines, including the two Coxeter generators s_1 and s_0. The vectors of the associated root lattice in V are marked