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Auguste Hoang Duc

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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?
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25
Visually deceptive “proofs” which are mathematically wrong
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21
Interesting “real life” applications of serious theorems
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13
Cesaro summable implies Abel summable
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10
Commutation when minimal and characteristic polynomial agree
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9
Why does the ideal $(a+bi)$ have index $a^2+b^2$ in $\mathbb{Z}[i]$?
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8
$\Bbb RP^2$ as the union of a Möbius band and a disc
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8
What test can be used to show $\sum \dfrac{n!}{n^n}$ converges?
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8
A snappy proof of Fatou's lemma
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8
Continuity of a function in two variables
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7
Why does Euclid's algorithm taken one step past the GCD seem to yield the LCM?
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6
Nonabelian group of order $p^4$
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6
Determinant of a finite-dimensional matrix in terms of trace
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6
Atiyah-MacDonald help with exercise 5.10
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6
Show that $x^4+1$ is reducible in p-adic numbers $\mathbb{Q}_p$ for p>2 prime.
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6
Reference book on measure theory
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5
Question about topology on $K^\times$ in local CFT
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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?
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5
Why aren't these partial derivatives interchangeable?
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5
Homeomorphism between $\mathbb{Q}$ and $\mathbb{Q}(>0)$, and $\mathbb{Q}(\ge 0)$
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