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doubt #Abelian group

0 votes
303 views

reference:Rosen

i think two more abelian groups are possible .

1 and 3 are given ,2 and 4 also exist .if i m wrong let me know ,thank you.

in Set Theory & Algebra 303 views
1
Both the groups you found out are isomorphic to the second group given in Rosen.
0

@Mk Utkarsh

Please explain what is isomorphic group..i have seen this for many times but haven't studied about it..

0

MiNiPanda added the answer below

0

Is group theory given in Rosen  Prateek Raghuvanshi ?  I never found it . :(. Can you plz tell me the edition exactly or the reference for reading group theory. Thanks

0

Pawan Kumar 2 It's in Indian edition 

0

Thanks brother  Mk Utkarsh

0
@Prateek,   Can you please explain the mapping for elements b and c from set A to set B in the given answer ?

1 Answer

3 votes
 
Best answer

Isomorphism : A group homomorphism that is bijective. 

We proved that all 3 groups are homomorphic as well as isomorphic.

 

Note:  I rearranged the elements of table to show the similarities between all 3 tables.

 


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0
@Utkarsh , can you please explain how you created the function mapping between 2 sets. here $f$ is not defined . so how you mapped the element from one set to another. Please explain :)
0
yes $f$ is not defined, i mapped the elements with same behavior in A to same behavior in B and C to show one to one correspondence in the given groups
0
Sorry.. I am still not getting the mapping.  Can you please explain a little bit about mapping for elements b And c from set A to set B ?
1
check the mapping and take group B's table and map the elements based of the mapping $A \rightarrow B$ you'll get the same mapping back of A

or vice versa, take A's table and interchange elements d and c you'll get the same table back.

Behavior of group B's d is same as group A's c

and

Behavior of group B's c is same as group A's d
0
got it. Thank you :)
0
very well explained :D
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