4. current community

    your communities

    more stack exchange communities

    company blog

Stack Exchange

user10676

Auguste Hoang Duc

top accounts reputation activity favorites subscriptions
Top Questions
22 votes

What is the idea of a monodromy?

number-theory general-topology representation-theory asked May 22 '12 at 15:33
math.stackexchange.com

21 votes

What is the difference between $\ell$-adic cohomology and cohomology with coefficient in $Z_\ell$?

algebraic-geometry cohomology sheaf-theory etale-cohomology asked May 31 '13 at 9:11
math.stackexchange.com

18 votes

Why does $H^i(X_{ét},\mathbb{Q}_p)$ have a Hodge-Tate structure?

nt.number-theory arithmetic-geometry galois-representations p-adic-hodge-theory asked Sep 8 '13 at 15:31
mathoverflow.net

15 votes

Multiplicative norm on $\mathbb{R}[X]$.

linear-algebra polynomials norm normed-spaces inner-product-space asked Oct 28 '12 at 12:48
math.stackexchange.com

14 votes

Is there a group between $SO(2,\mathbb{R})$ and $SL(2,\mathbb{R})$?

group-theory lie-groups algebraic-groups asked Sep 25 '14 at 21:20
math.stackexchange.com

13 votes

What is the classification of characters in $p$-adic Hodge theory?

nt.number-theory galois-representations p-adic-hodge-theory asked Aug 27 '13 at 19:40
mathoverflow.net

13 votes

Why is $\mathbb{C}_p$ isomorphic to $\mathbb{C}$?

abstract-algebra field-theory valuation-theory asked May 23 '11 at 7:41
math.stackexchange.com

12 votes

What is $\mathbb{C}^{Aut(\mathbb{C}/\mathbb{Q})}$?

field-theory asked May 25 '11 at 15:32
math.stackexchange.com

10 votes

On Grunwald-Wang theorem

number-theory galois-cohomology asked Jun 22 '12 at 16:30
math.stackexchange.com

9 votes

Exercise on representations

linear-algebra representation-theory asked Feb 26 '13 at 19:19
math.stackexchange.com

1 2

Top Answers
38
Why can't you flatten a sphere?
math.stackexchange.com

25
Visually deceptive “proofs” which are mathematically wrong
math.stackexchange.com

21
Interesting “real life” applications of serious theorems
math.stackexchange.com

13
Cesaro summable implies Abel summable
math.stackexchange.com

9
Why does the ideal $(a+bi)$ have index $a^2+b^2$ in $\mathbb{Z}[i]$?
math.stackexchange.com

8
Commutation when minimal and characteristic polynomial agree
math.stackexchange.com

8
A snappy proof of Fatou's lemma
math.stackexchange.com

8
Continuity of a function in two variables
math.stackexchange.com

8
What test can be used to show $\sum \dfrac{n!}{n^n}$ converges?
math.stackexchange.com

7
Why does Euclid's algorithm taken one step past the GCD seem to yield the LCM?
math.stackexchange.com

7
$\Bbb RP^2$ as the union of a Möbius band and a disc
math.stackexchange.com

6
Reference book on measure theory
math.stackexchange.com

6
Determinant of a finite-dimensional matrix in terms of trace
math.stackexchange.com

6
Nonabelian group of order $p^4$
math.stackexchange.com

6
Show that $x^4+1$ is reducible in p-adic numbers $\mathbb{Q}_p$ for p>2 prime.
math.stackexchange.com

5
Homeomorphism between $\mathbb{Q}$ and $\mathbb{Q}(>0)$, and $\mathbb{Q}(\ge 0)$
math.stackexchange.com

5
Why aren't these partial derivatives interchangeable?
math.stackexchange.com

5
Question about topology on $K^\times$ in local CFT
math.stackexchange.com

5
Show that $ a，b，c, \sqrt{a}+ \sqrt{b}+\sqrt{c} \in\mathbb Q \implies \sqrt{a},\sqrt{b},\sqrt{c} \in\mathbb Q $
math.stackexchange.com

5
What indexes do the subgroups of $\mathrm{GL}_n(\Bbb C)$ have?
math.stackexchange.com

5
Atiyah-MacDonald help with exercise 5.10
math.stackexchange.com