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location France
age 22
visits member for 2 years
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2d
awarded  Popular Question
2d
asked Extending cellular maps between aspherical complexes
Jul
18
asked $\mathbb{F}_2 \times \mathbb{F}_2$ is not subgroup separable
Jul
17
comment Model theory in group theory
Sorry, it should be an "every". So it is a universal quantifier.
Jul
17
revised Model theory in group theory
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Jul
17
revised Model theory in group theory
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Jul
16
revised Right-angled Artin groups are residually finite
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Jul
16
answered limit of integral $n\int_{0}^{1} x^n f(x) \text{d}x$ as $n\rightarrow \infty$
Jul
15
accepted Right-angled Artin groups are residually finite
Jul
14
revised Cayley complex as universal covering space
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Jul
14
comment Right-angled Artin groups are residually finite
The proof seems to be interesting, but it is pretty laconic so that it is hard to follow the argument...
Jul
14
comment Right-angled Artin groups are residually finite
Green's proof is very interesting, thank you. However, I did not find Droms' proof; do you have a reference? It seems that the result is given in his thesis, but it does not seem available.
Jul
12
revised Basic Group Theory question
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Jul
12
revised Basic Group Theory question
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Jul
12
answered Basic Group Theory question
Jul
12
answered Properties about order of a general group
Jul
11
asked Right-angled Artin groups are residually finite
Jul
8
comment Help with semidirect product
What did you try?
Jul
7
comment Differentiable curves that are not smooth
For example, $t \mapsto (t^3,t^9)$.
Jul
6
revised In a free group two elements commute if and only if they are powers of a common element
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