Kaitlyn 's user avatar
Kaitlyn 's user avatar
Kaitlyn 's user avatar
Kaitlyn
  • Member for 9 years, 4 months
  • Last seen more than 9 years ago
2 votes
4 answers
2k views

To which group is $G/\ker \phi$ isomorphic to?

2 votes
1 answer
2k views

Find the characteristic of $Z_n \times Z_m$:

2 votes
2 answers
374 views

What can we say about the order of a group?

1 vote
2 answers
985 views

Does a subring of $\mathbb{Z}$ need to be closed under multiplication?

0 votes
2 answers
92 views

List the elements of G

0 votes
1 answer
193 views

Express σ using matrix notation

0 votes
1 answer
84 views

Given the permutation, which symmetric group does it belong to?

0 votes
1 answer
160 views

Given transpositions, can you express the permutation in matrix form?

0 votes
1 answer
1k views

domain and range and determine whether * defines a binary operation on G?

0 votes
2 answers
159 views

If $G$ is abelian, prove that $H = \{g \in G \mid g^2 = e\}$ is a subgroup of $G$. [duplicate]

0 votes
2 answers
2k views

Show that $H$ is not normal in $A_4$?

-1 votes
1 answer
1k views

If R is an integral domain disprove the RxR is an integral domain? [duplicate]