Semigroups isomorphism
120288
Semigroup isomorphism
116594
Finite fields are isomorphic
136422
Two finite fields with the same number of elements are isomorphic
56234
Isomorphism $f$ preserves the order of an element?
35369
Monoid / semigroup with cancellation property $ ab=ac\Rightarrow b = c,$ $\ ba = ca\Rightarrow b = c$
117131
Canonical Isomorphism Between $\mathbf{V}$ and $(\mathbf{V}^*)^*$
97999
Explain these ring isomorphisms
118354
Epimorphism and Monomorphism = Isomorphism?
6385
Minimal counterexamples of the isomorphism problem for integral group rings
91222
Isomorphism between $\mathfrak o(4,\mathbb R)$ and $\mathfrak o (3,\mathbb R) \oplus\mathfrak o (3,\mathbb R) $
120035
Pattern in Isomorphisms between $\mathbb Z_m \times \mathbb Z_n$ and $\mathbb Z_{mn}$
158975
Isomorphism of centers of isomorphic groups
19346
Isomorphism of affine varieties
36980
Prove the third isomorphism theorem
18415
Direct sum of Abelian groups and Isomorphism
126098
Isomorphism of factor groups
68732
Prove that a semigroup satisfying $a^pb^q=ba$ is commutative