Group Theory. I worked on it . but ı couldn't reach any clear proof
19720
A normal subgroup intersects the center of the $p$-group nontrivially
41688
An elementary problem in Group Theory: the unique noncyclic group of order 4
150007
Prove that $(\mathbb{Z}_n , +)$, the integers $\pmod{n}$ under addition, is a group.
101223
What's a good beginner resource to learn group theory?
57215
Stuck on formal proofs. Not sure how to continue
33819
What does "the ${\bf N}$ of a group" mean?
102859
Proving that $G$ is a group if $a*x=b$ and $y*a=b$ have solutions.
156247
Question about permutations and cycles (Groups and Symmetries)
134368
In Group theory proofs what is meant by "well defined"
23279
Group Theory Isomorphism
50936
How to solve permutation group equations?(discrete mathematics,group theory)
151210
How can we find and categorize the subgroups of $\mathbb{R}$?
121141
Proving Finiteness of Group from Presentation
73113
Groups and Symmetries
90329
Prove there is no simple group of order $729$
11003
Proving that $G/N$ is an abelian group
99346
Prove a result on transitive group actions.