Fixed field of automorphism $t\mapsto t+1$ of $k(t)$
34670
What exactly is the fixed field of the map $t\mapsto t+1$ in $k(t)$?
146278
Automorphism group of direct product of groups
61674
Coker of powers of an endomorphism
5802
Proving the universal mapping property for polynomial rings
98731
Show that there is no epimorphism from ($\mathbb{Q}$, +) to ($\mathbb{Z}$, +)
52556
Isomorphism of $S^1$.
78950
Does this map extend to a unique automorphism of the polynomial ring of an integral domain?
30817
Is an automorphism of the field of real numbers the identity map?
89415
Number of homomorphisms from $(\mathbb Q^+ , \,\cdot\,)$ to $(\mathbb Z_n , +)$
52354
Given a idempotent endomorphism, show that $M = \ker(f) \oplus \ker (f-\text{id}_M)$
134458
Isomorphisms preserving integral domains and fields
140540
Infinite number of intermediate fields between K(u,v) and K
101893
Is there a classification of regular maps $\mathbb{P}^1(k)\to\mathbb{A}^1(k)$?
27746
Autohomeomorphism of the unit disk which is constant on the boundary, and which takes 0 to a prescribed point
101079
Inner automorphisms form a normal subgroup of $\operatorname{Aut}(G)$
25728
A second isomorphism theorem for action on cosets
132311
T$\mathbb{S}^{n} \times \mathbb{R}$ is diffeomorphic to $\mathbb{S}^{n}\times \mathbb{R}^{n+1}$