List questions from dihedral-groups

Published on 10 Sep 2017 - 18:53

83

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What does "A function on the $n-$gon" mean?

Published on 10 Sep 2017 - 20:45

52

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Need help with a proof involving subgroups of $D_{n}$

Published on 19 Sep 2017 - 2:09

149

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$D_{12}$ is isomorphic to $\Bbb Z_3\times D_4.$

Published on 22 Sep 2017 - 9:04

72

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Show that the dihedral group $D_6$ of order $12$ has a nonidentity element $z$ such that $zg = gz$ for all $g ε D_6$.

Published on 04 Oct 2017 - 4:46

119

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Identifying the center of the dihedral group of order $2n$

Published on 04 Oct 2017 - 20:21

2.8k

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Defining dihedral groups $\{\sigma \in S_n: $ something $\}$

Published on 13 Oct 2017 - 17:11

62

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Show $T(x)=x+1$ and $I(x)=-x$ produce a dihedral group$G := D_n$

Published on 21 Oct 2017 - 9:49

1.7k

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Compute cosets in the dihedral group

Published on 24 Oct 2017 - 1:39

498

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Describe all homomorphic images of the dihedral group $D_3$ of order 6

Published on 24 Oct 2017 - 2:26

195

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Determine whether pairs of elements belong to the same left H-cosets

Published on 24 Oct 2017 - 21:42

1.4k

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Orbits of rotations under action by D4.

Published on 25 Oct 2017 - 17:20

720

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Determining order of elements and number of automorphisms in dihedral groups

Published on 27 Oct 2017 - 3:10

467

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Confusion about centraliser of $D_5$ in $GL_4(\mathbb{Z})$

Published on 28 Oct 2017 - 19:16

102

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Relation between group algebra, representation and companion matrix

Published on 31 Oct 2017 - 1:51

List Question

Dihedral Groups; what exactly are the elements of the set?

What does "A function on the $n-$gon" mean?

Need help with a proof involving subgroups of $D_{n}$

$D_{12}$ is isomorphic to $\Bbb Z_3\times D_4.$

Show that the dihedral group $D_6$ of order $12$ has a nonidentity element $z$ such that $zg = gz$ for all $g ε D_6$.

Identifying the center of the dihedral group of order $2n$

Defining dihedral groups $\{\sigma \in S_n: $ something $\}$

Show $T(x)=x+1$ and $I(x)=-x$ produce a dihedral group$G := D_n$

Compute cosets in the dihedral group

Describe all homomorphic images of the dihedral group $D_3$ of order 6

Determine whether pairs of elements belong to the same left H-cosets

Orbits of rotations under action by D4.

Determining order of elements and number of automorphisms in dihedral groups

Confusion about centraliser of $D_5$ in $GL_4(\mathbb{Z})$

Relation between group algebra, representation and companion matrix

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