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1923
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visits member for 2 years, 2 months
seen Dec 16 at 14:51

Dec
11
comment Best book for a casual pure mathematician?
You want a popular science book on pure math, like number theory, right?
Dec
2
accepted Show a continuous function whose limits are finite is bounded.
Dec
2
comment Show a continuous function whose limits are finite is bounded.
Could you explain how we get uniformly continuous from continuous?
Dec
2
asked Show a continuous function whose limits are finite is bounded.
Dec
1
accepted Show $f$ attains local minimum at a given point
Dec
1
asked Show $f$ attains local minimum at a given point
Nov
30
comment Localization of Rings: Show $R_{f} \simeq R[X]/\langle 1-fX \rangle$
Perfect explanation. You identify almost all the gaps in my mind!
Nov
30
accepted Localization of Rings: Show $R_{f} \simeq R[X]/\langle 1-fX \rangle$
Nov
30
asked Localization of Rings: Show $R_{f} \simeq R[X]/\langle 1-fX \rangle$
Nov
23
accepted Prove $n$-th derivative of a real function at $0$ is always $0$
Nov
23
asked Prove $n$-th derivative of a real function at $0$ is always $0$
Oct
31
awarded  Popular Question
Oct
30
accepted $\sum{\frac{1}{\sqrt{4n+1}}+\frac{1}{\sqrt{4n+3}}-\frac{a}{\sqrt{2n}}}$ converges?
Oct
30
comment $\sum{\frac{1}{\sqrt{4n+1}}+\frac{1}{\sqrt{4n+3}}-\frac{a}{\sqrt{2n}}}$ converges?
I have tried but failed also.
Oct
30
asked $\sum{\frac{1}{\sqrt{4n+1}}+\frac{1}{\sqrt{4n+3}}-\frac{a}{\sqrt{2n}}}$ converges?
Oct
25
comment Suppose $|G| = 105$. Show that it is abelian if it has a normal $3$-Sylow subgroup.
“since H≅C3, we have that Aut(H)≅C” I guess I must have forget some theorem to understand the reasoning behind this. Would you mind give me a hint?
Oct
19
comment Insights on coset in abstract algebra
The geometry examples are what I am looking for.
Oct
19
revised Insights on coset in abstract algebra
added 65 characters in body
Oct
19
asked Insights on coset in abstract algebra
Oct
16
awarded  Notable Question