Homomorphism and isomorphism.
27436
Does $G\cong G/H$ imply that $H$ is trivial?
126644
Simple module and homomorphisms
18343
Counting homomorphisms between $\Bbb Z$ and $\Bbb Z_n$ and also between $\Bbb Z_n$ and $\Bbb Q$
83872
Isomorphisms for graphs with loops and multiple edges
117131
Canonical Isomorphism Between $\mathbf{V}$ and $(\mathbf{V}^*)^*$
27670
Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
60760
Ring homomorphism and characteristic
86748
Isomorphism of hom sets implies objects are isomorphic
68728
Why does the natural ring homomorphism induce a surjective group homomorphism of units?
149856
Image of ring homomorphism is a subring
111375
Normality of subgroups and Sylow groups under homomorphisms...
1558
Number of homomorphisms between two cyclic groups.
129858
"Almost" ring homomorphism
6171
Isomorphism between $\Bbb{Z}[\sqrt{d}]$ and a quotient of $\Bbb{Z}[X].$
1026
Ring homomorphism with $\phi(1_R) \neq1_S$
32428
Group homomorphisms and which of the following statements are true (NBHM-$2014$)
73652
Exhibiting an isomorphism between two finite fields