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New posts in group-theory
Derived subgroups of $SL(2,2)$, $SL(2,3)$ and $GL(2,3)$
group-theory
finite-groups
Show that a group of order $pq$ has subgroup of order $p$ and $q$ without using sylow's and cauchy's theorem
abstract-algebra
group-theory
Algebraic argument for why any $A_5$ in $S_6$ can be extended to an $S_5$ in $S_6$
group-theory
symmetric-groups
platonic-solids
Cyclic property of the root of a cubic polynomial
group-theory
polynomials
cubics
Solvable group of order $pqr^2$
abstract-algebra
group-theory
free groups: $F_X\cong F_Y\Rightarrow|X|=|Y|$
abstract-algebra
group-theory
group-presentation
About actions of ${\rm Aut}(G)$, conjugacy classes and inner automorphisms of said group
group-theory
group-actions
automorphism-group
Show that $PSL(3,4)$ has no element of order $15$.
linear-algebra
group-theory
finite-groups
Generators of a cyclic group
group-theory
cyclic-groups
Kernel of Group Action
group-theory
group-actions
Some questions about representations of $SO(6)$
group-theory
representation-theory
lie-algebras
lie-groups
mathematical-physics
When is $\mathbb{Z}$ a flat $\mathbb{Z}G$-module?
group-theory
commutative-algebra
group-cohomology
Classifying groups of order 60
abstract-algebra
group-theory
semidirect-product
For which $n$ is it "feasible" to classify groups of order $n$?
group-theory
Category theory for graph theory research
abstract-algebra
group-theory
graph-theory
category-theory
book-recommendation
Subgroup which is generated by odd elements
group-theory
Is the group of positive rationals under multiplication isomorphic to its subgroup consisting of rationals with odd numerators and denominators?
abstract-algebra
group-theory
abelian-groups
Permutation Representations and Group Actions
abstract-algebra
group-theory
permutations
Structure of simple group of order 168 just via Sylow theory (fix for Math Doctor Bob)
abstract-algebra
group-theory
finite-groups
Does this almost-group uniquely define a group?
abstract-algebra
group-theory
quasigroups
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