1,704 reputation
619
bio website anhhuy.ch
location Switzerland
age 20
visits member for 2 years, 6 months
seen 21 hours ago
stats profile views 257

My name is Anh Huy Truong and I am currently studying mathematics at the ETH Zürich.


Mar
29
comment Lack of understanding of the proof of the existence of an irreducible polynomial of any degree $n \geq 2$ in $\mathbb{Z}_p[x]$
@Jyrki: Regarding your first comment, I have no idea what an ideal is, so I can't really follow. Regarding your second comment, we have not anywhere defined an "index" except in this proof (if this is considered a definition). I understood if to be some integer assigned to an element of a set.
Mar
29
revised Lack of understanding of the proof of the existence of an irreducible polynomial of any degree $n \geq 2$ in $\mathbb{Z}_p[x]$
deleted 5 characters in body
Mar
29
asked Lack of understanding of the proof of the existence of an irreducible polynomial of any degree $n \geq 2$ in $\mathbb{Z}_p[x]$
Mar
29
accepted Why is this map diagonalisable?
Mar
12
asked Why is this map diagonalisable?
Mar
6
accepted How to show $\langle a, b \; | \; aba = bab \rangle \cong \langle x,y \; | \; x^3=y^2 \rangle$?
Mar
6
comment How to show $\langle a, b \; | \; aba = bab \rangle \cong \langle x,y \; | \; x^3=y^2 \rangle$?
@Edison: The notes are online, but in German. (math.ethz.ch/~suter/refl.pdf)
Mar
6
comment How to show $\langle a, b \; | \; aba = bab \rangle \cong \langle x,y \; | \; x^3=y^2 \rangle$?
How does one come up with such a map?
Mar
6
asked How to show $\langle a, b \; | \; aba = bab \rangle \cong \langle x,y \; | \; x^3=y^2 \rangle$?
Feb
28
accepted Deducing a property for any function $f$ using the wave equation
Feb
27
comment Deducing a property for any function $f$ using the wave equation
I don't quite get the difference between the two statements. I understand "for any f, A(r) must equal C/r" as "we have the same constant no matter which function $f$ we are plugging into the ansatz", whereas you say that this means A(r) depends on f. This confuses me, could you explain this part more in detail (not that I misunderstand the problem...), please?
Feb
27
asked Deducing a property for any function $f$ using the wave equation
Dec
21
comment How to show $\mu(\overline{\mathbb{R}}) = \overline{\mathbb{R}}$ iff $a, b, c, d \in \mathbb{R}$ for $\mu(z) = \frac{az+b}{cz+d}$?
@sos440: Why not as an answer? :)
Dec
21
comment How to show $\mu(\overline{\mathbb{R}}) = \overline{\mathbb{R}}$ iff $a, b, c, d \in \mathbb{R}$ for $\mu(z) = \frac{az+b}{cz+d}$?
I have edited my original question. Is the new statement correct?
Dec
21
revised How to show $\mu(\overline{\mathbb{R}}) = \overline{\mathbb{R}}$ iff $a, b, c, d \in \mathbb{R}$ for $\mu(z) = \frac{az+b}{cz+d}$?
added 294 characters in body
Dec
21
asked How to show $\mu(\overline{\mathbb{R}}) = \overline{\mathbb{R}}$ iff $a, b, c, d \in \mathbb{R}$ for $\mu(z) = \frac{az+b}{cz+d}$?
Dec
13
comment Favourite open problem?
@Collman: mathoverflow.net/questions/17560/…
Dec
8
comment Foreign undergraduate study possibilities for a student in Southeastern Europe
@Lovre: I study at the ETH Zürich and I can tell you that it (for now) has the same fees for both local and foreign students. Also, at least for Germans, it is incredibly easy to apply. However, living expenses in Switzerland tend to be pretty high.
Dec
8
accepted Questions regarding the projective space
Dec
5
comment Questions regarding the projective space
@DylanMoreland: As many as there are in $K$, except for $0$.