Direct product of Z4 and Z4 and Z4

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Definition

This group is defined in the following equivalent ways:

1. It is the external direct product of three copies of cyclic group:Z4.
2. It is a homocyclic group of order $2^6 = 64$ and exponent $4$.
3. It is the cube of the group cyclic group:Z4.

As an abelian group of prime power order

This group is the abelian group of prime power order corresponding to the partition:

$\! 6 = 2 + 2 + 2$

and the prime $p = 2$. In other words, it is the group $\mathbb{Z}_{p^2} \times \mathbb{Z}_{p^2} \times \mathbb{Z}_{p^2}$.

Value of prime number $p$	Corresponding group
3	direct product of Z9 and Z9 and Z9
5	direct product of Z25 and Z25 and Z25

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

Function	Value	Similar groups	Explanation for function value
underlying prime of p-group	2
order (number of elements, equivalently, cardinality or size of underlying set)	64	groups with same order
prime-base logarithm of order	6	groups with same prime-base logarithm of order
max-length of a group	6		max-length of a group equals prime-base logarithm of order for group of prime power order
chief length	6		chief length equals prime-base logarithm of order for group of prime power order
composition length	6		composition length equals prime-base logarithm of order for group of prime power order
exponent of a group	4	groups with same order and exponent of a group | groups with same prime-base logarithm of order and exponent of a group | groups with same exponent of a group
prime-base logarithm of exponent	2	groups with same order and prime-base logarithm of exponent | groups with same prime-base logarithm of order and prime-base logarithm of exponent | groups with same prime-base logarithm of exponent
Frattini length	2	groups with same order and Frattini length | groups with same prime-base logarithm of order and Frattini length | groups with same Frattini length	Frattini length equals prime-base logarithm of exponent for abelian group of prime power order
minimum size of generating set	3	groups with same order and minimum size of generating set | groups with same prime-base logarithm of order and minimum size of generating set | groups with same minimum size of generating set
subgroup rank of a group	3	groups with same order and subgroup rank of a group | groups with same prime-base logarithm of order and subgroup rank of a group | groups with same subgroup rank of a group	same as minimum size of generating set since it is an abelian group of prime power order
rank of a p-group	3	groups with same order and rank of a p-group | groups with same prime-base logarithm of order and rank of a p-group | groups with same rank of a p-group	same as minimum size of generating set since it is an abelian group of prime power order
normal rank of a p-group	3	groups with same order and normal rank of a p-group | groups with same prime-base logarithm of order and normal rank of a p-group | groups with same normal rank of a p-group	same as minimum size of generating set since it is an abelian group of prime power order
characteristic rank of a p-group	3	groups with same order and characteristic rank of a p-group | groups with same prime-base logarithm of order and characteristic rank of a p-group | groups with same characteristic rank of a p-group	same as minimum size of generating set since it is an abelian group of prime power order
nilpotency class	1		The group is a nontrivial abelian group
derived length	1		The group is a nontrivial abelian group
Fitting length	1		The group is a nontrivial abelian group -

GAP implementation

Group ID

This finite group has order 64 and has ID 55 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(64,55)

For instance, we can use the following assignment in GAP to create the group and name it $G$:

gap> G := SmallGroup(64,55);

Conversely, to check whether a given group $G$ is in fact the group we want, we can use GAP's IdGroup function:

IdGroup(G) = [64,55]

or just do:

IdGroup(G)

to have GAP output the group ID, that we can then compare to what we want.

Other descriptions

Description	Functions used
DirectProduct(CyclicGroup(4),CyclicGroup(4),CyclicGroup(4))	DirectProduct, CyclicGroup