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user1729

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I'd rather walk than take a taxi.

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63
Does $G\cong G/H$ imply that $H$ is trivial?
math.stackexchange.com

48
Understandable questions which are hard for non-mathematicians but easy for mathematicians
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40
Is every group the automorphism group of a group?
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31
Theorems with the greatest impact on group theory as a whole
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31
Has this "generalized semidirect product" been studied?
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29
Why are maximal ideals prime?
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28
Is $e^{i\pi}+1=0$ a good motivation for introducing $e$ or $i$? Why (not)?
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27
What is the intuition behind short exact sequences of groups; in particular, what is the intuition behind group extensions?
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24
What should an amateur do with a proof of an open problem?
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21
How many digits of $\pi$ are currently known?
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21
When can a homomorphism be determined entirely by its generators
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21
How acceptable is an ellipsis "..." in formal mathematics?
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21
Why are groups "abelian" but rings "commutative"?
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19
If $a$ commutes with $b$, does $a^{-1}$ commute with $b$?
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19
When is a group isomorphic to the infinite cyclic group?
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19
What does this "subset" symbol mean?
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18
Distinguishing Inner Automorphisms
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17
Do groups, rings and fields have practical applications in CS? If so, what are some?
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16
Commutator subgroup of rank-2 free group is not finitely generated.
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16
Tarski Monster group with prime $3$ or $5$
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15
Do all Groups have a representation?
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15
What is the abelianization of $\langle x,y,z\mid x^2=y^2z^2\rangle?$
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14
Is there an infinite simple group with no element of order $2$?
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14
Presentations of subgroups of groups given by presentations
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14
Are there any conditions , such that 2 permutations in $S_4$ are commutative?
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13
When are two semidirect products isomorphic?
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13
Why Aren't "Similar" Matrices Actually the Same?
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13
Is there difference between finitely presented groups and finitely generated groups?
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12
Topics in Combinatorial Group Theory (for a short talk).
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12
Understandable questions which are hard for non-mathematicians but easy for mathematicians
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