Direct product of D8 and Z4 and Z2
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Contents
Definition
This group is defined in the following equivalent ways:
- It is the external direct product of dihedral group:D8, cyclic group:Z4, and cyclic group:Z2.
- It is the external direct product of dihedral group:D8 and direct product of Z4 and Z2.
- It is the external direct product of direct product of D8 and Z2 and cyclic group:Z4.
- It is the external direct product of direct product of D8 and Z4 and cyclic group:Z2.
Arithmetic functions
Want to compare and contrast arithmetic function values with other groups of the same order? Check out groups of order 64#Arithmetic functions
GAP implementation
Group ID
This finite group has order 64 and has ID 196 among the groups of order 64 in GAP's SmallGroup library. For context, there are groups of order 64. It can thus be defined using GAP's SmallGroup function as:
SmallGroup(64,196)
For instance, we can use the following assignment in GAP to create the group and name it :
gap> G := SmallGroup(64,196);
Conversely, to check whether a given group is in fact the group we want, we can use GAP's IdGroup function:
IdGroup(G) = [64,196]
or just do:
IdGroup(G)
to have GAP output the group ID, that we can then compare to what we want.
Alternative descriptions
Description | Functions used | Mathematical comment |
---|---|---|
DirectProduct(DihedralGroup(8),CyclicGroup(4),CyclicGroup(2)) | DirectProduct, DihedralGroup, and CyclicGroup |