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Jan
26
awarded  Yearling
Jan
24
revised For which $x$ and $y$ does $\sigma_x(n) $ divide $\sigma_y(n)$ for all $n$?
typo in the title
Jan
24
suggested approved edit on For which $x$ and $y$ does $\sigma_x(n) $ divide $\sigma_y(n)$ for all $n$?
Jan
21
awarded  Enlightened
Jan
21
revised Dual space of $\ell^\infty$
I have added clarification of the question. (Since it already has been bumped by Asaf's edit.)
Jan
21
awarded  Nice Answer
Jan
21
suggested approved edit on Dual space of $\ell^\infty$
Jan
15
revised About the axiom of choice, the fundamental theorem of algebra, and real numbers
added (axiom-of-choice) tag
Jan
15
suggested approved edit on About the axiom of choice, the fundamental theorem of algebra, and real numbers
Nov
29
comment Are there any good websites for hosting discussions of mathematical papers?
Related discussion on academia.SE: Is there a good site for holding online discussions of scientific papers?
Nov
13
revised Irrationality of $ \pi e, \pi^{\pi}$ and $e^{\pi^2}$
added (irrational-numbers) tag
Nov
13
suggested approved edit on Irrationality of $ \pi e, \pi^{\pi}$ and $e^{\pi^2}$
Nov
12
revised Demonstrating that rigour is important
capitalization
Oct
17
comment Outline of Generic Separable Banach Spaces don't have a Schauder Basis
Here is MSE copy of the question: math.stackexchange.com/questions/1477213/… (At the moment, no reactions given there.)
Sep
24
revised Amount of math research published in other languages?
added (publishing) tag
Sep
24
suggested approved edit on Amount of math research published in other languages?
Sep
22
comment Approximating integers with prime quotients
Some posts on Math.SE: Rationals of the form $\frac{p}{q}$ where $p,q$ are primes in $[a,b]$., The set of rational numbers of the form p/p', where p and p' are prime, is dense in $[0, \infty)$ and Are fractions with prime numerator and denominator dense?. Related MO post: Using Quotient of Prime Numbers to Approximation Reals.
Sep
16
comment Is an inclusion of finite groups with boolean lattice, linearly primitive?
Sorry, now I noticed that your question is about finite groups. But I will keep comment, just in case it is useful for other users reading this question.
Sep
16
comment Is an inclusion of finite groups with boolean lattice, linearly primitive?
Is perhaps this result of Tůma useful for answering this question? Every algebraic lattice is isomorphic to an interval in the subgroup lattice of some group. See DOI: 10.1016/0021-8693(89)90171-3, Google, Google Books, Google Scholar.
Aug
28
comment Antichain on $\mathcal{P}(\omega)/fin$ of cardinality $2^{\aleph_0}$?
BTW proof in Asaf's post can be considered as a typical example of "transfer via bijection".