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New posts in group-theory
Spin group Spin(4,1)
group-theory
reference-request
lie-groups
lie-algebras
When are the product of cyclic groups also cyclic? [duplicate]
abstract-algebra
group-theory
cyclic-groups
Is there an Elementary Theory of the Category of Groups?
group-theory
reference-request
category-theory
foundations
Compute the kernel of the group hom $\Omega : \Bbb{Q}^{\times} \to \Bbb{Z}^+$.
group-theory
prime-numbers
integers
rational-numbers
group-homomorphism
If $G/Z$ is a product of $p$-groups...
group-theory
finite-groups
Non-abelian $p$-group; abelian subgroups of index $p$
group-theory
finite-groups
p-groups
How to find presentation of a group using GAP?
group-theory
finite-groups
gap
computational-algebra
How is $\mathrm{PGL}(V)$ a subgroup of $\mathrm{P\Gamma L}(V)$?
linear-algebra
abstract-algebra
group-theory
permutations
linear-groups
Covering a group with the conjugates of two subgroups related by an automorphism
group-theory
finite-groups
Extending Herstein's Challenging Exercise to Modules
abstract-algebra
group-theory
commutative-algebra
examples-counterexamples
Prove the order of each nonindentity element of $G$ is $p$. [closed]
abstract-algebra
group-theory
prime-numbers
abelian-groups
cyclic-groups
An abelian group of order 100
abstract-algebra
group-theory
finite-groups
abelian-groups
Show that there is a positive integer $n$ such that $G \cong \ker(\phi^{n}) \times \phi^{n}(G)$
abstract-algebra
group-theory
finite-groups
abelian-groups
How many homomorphisms $\Psi : S_3 \rightarrow S_3$ exist?
abstract-algebra
group-theory
A problem about abelian group
abstract-algebra
group-theory
abelian-groups
Action via automorphism
group-theory
finite-groups
Definition of Simple Group
abstract-algebra
group-theory
simple-groups
Group tables for a group of four elements.
abstract-algebra
group-theory
finite-groups
abelian-groups
Prove that a subgroup which contains half of all elements is a normal subgroup.
group-theory
Is the free product of residually finite groups always residually finite?
abstract-algebra
group-theory
group-homomorphism
infinite-groups
free-product
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