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seen Mar 21 at 0:48

Feb
4
comment Let $A,B$ be two subgroups of $G$. Show that $g(A\cap B)=gA \cap gB$ for all $g \in G$
This would be easier to think about if you took $c \in A \cap B$. So this would rephrase your first step to $gc \in g(A \cap B)$. The result basically follows from here.
Jul
17
comment How to solve this Pell's equation $x^{2} - 991y^{2} = 1 $
Read this.
Jul
3
comment Riemann Zeta formula
Related mathoverflow.net/questions/59770/…
Jul
2
comment Your favourite application of the Baire Category Theorem
mathoverflow.net/questions/56323/… and math.stackexchange.com/questions/135947/…
Jul
1
comment APB is congruent to DPC. Find $x$
@Michael I believe that is the case.
Jul
1
comment Find numbers with a given number of divisors.
End with "$0$" means that the number must have at least have one divisor of $2$ and one divisor of $5$. The rest follows from the divisor function.
Jun
27
comment Where is the most appropriate place to ask about the contribution of published papers?
Mathscinet has reviews of certain papers.
Jun
26
comment Find Absolute Max and Min
All you quantum typists....
Jun
26
comment Exposition on hyperelliptic curves
I checked this out from the library today and it is a very clearly written book indeed.
Jun
25
comment Mathematical Discoveries that were made or supported by savants
I've actually thought about this for awhile. My searches so far have come up empty.
Jun
25
comment You must be joking … math and fun
This is related to this and this MO thread which is pretty much an exhaustive list.
Jun
25
comment Using sage to test for squares in residue fields
What about the residue_symbol method?
Jun
25
comment Using sage to test for squares in residue fields
Did you take a look at this?
Jun
24
comment Important papers in arithmetic geometry and number theory
@Marvis You're right. I'm not able to. Thank you for pointing it out.
Jun
24
comment Important papers in arithmetic geometry and number theory
@Marvis I think it's good as answer. Should I delete it then?
Jun
24
comment Integral of $\int{\frac{dx}{(\arcsin{x})\sqrt{1-x^2}}}$
You set $dv = 1/arcsin(x)$? How did you even integrate that?
Jun
23
comment Important papers in arithmetic geometry and number theory
@draks That is a very good paper. It's listed in the wikipedia article I linked to.
Jun
23
comment Learning Model Theory
Really? I saw it when I search on amazon but most of the reviews said it was rather terse and that you needed much background. That was not your experience then?
Jun
21
comment Topology for beginners
We've had so many reference requests for topology books that there is a thread about topology threads.
Jun
20
comment Famous papers in algebraic geometry
Oh you meant all of it. You're probably right there. They are incredibly long.